AQA A-Level · Thinka 原創模擬試題

2023 AQA A-Level Geography 7037 模擬試題連答案詳解

Thinka Jun 2023 AQA A Level-Style Mock — Geography 7037

240 分300 分鐘2023

An original Thinka practice paper modelled on the structure and difficulty of the Jun 2023 AQA A Level Geography 7037 paper. Not affiliated with or reproduced from AQA.

甲部: 必答 Physical System

Answer all questions in this section. Focuses on Water and Carbon Cycles.

5 題目 · 42 分

題目 1 · Structured Outline

4 分

Outline the role of the biological pump in transferring carbon within the oceanic carbon cycle.

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解題

The biological pump is the ocean's biologically driven carbon sequestration process:

1. **Carbon Fixation (Photosynthesis)**: In the sunlit surface waters (euphotic zone), microscopic marine plants called phytoplankton absorb dissolved carbon dioxide from the ocean water to perform photosynthesis. This converts inorganic carbon into organic carbon compounds. (1 mark)

2. **Trophic Transfer**: This organic carbon is transferred up the food chain as zooplankton and larger marine organisms consume the phytoplankton, incorporating carbon into their own tissues. (1 mark)

3. **Downward Transport (Marine Snow)**: When these marine organisms die, or produce waste products, this carbon-rich organic matter sinks down into the deeper layers of the ocean as 'marine snow'. (1 mark)

4. **Deep-Ocean Sequestration**: Although some of this organic material is decomposed by bacteria in the deep ocean (releasing carbon dioxide back into the water), a small portion escapes decomposition, settling on the seabed where it is buried in sediment, sequestering the carbon for millions of years. (1 mark)

評分準則

Marking Instructions:
- Award 1 mark for identifying each distinct stage or process involved in the biological pump's carbon transfer.
- Candidates must show progressive development of the sequence to gain full marks.

Mark Breakdown:
- **1 mark**: Explains carbon fixation at the surface (e.g., phytoplankton taking in carbon dioxide via photosynthesis).
- **1 mark**: Explains how carbon moves through the food chain (trophic transfer via consumption).
- **1 mark**: Explains the physical movement of organic carbon down the water column (e.g., dead organisms or faecal matter sinking as 'marine snow').
- **1 mark**: Explains long-term storage or sequestration (e.g., accumulation and burial in deep-sea sediments on the ocean floor).

*Accept alternative phrasing that accurately describes the biogeochemical transfer of carbon from the surface ocean to the deep ocean floor.*

題目 2 · Data Analysis

6 分

Figure 1 shows Net Ecosystem Productivity (NEP) and Annual Precipitation across five forest sites in a temperate region. Positive NEP values indicate carbon sequestration (a carbon sink).

**Figure 1**

| Site | Forest Type and Age (years) | Annual Precipitation (mm) | Net Ecosystem Productivity (\(g\ C\ m^{-2}\ yr^{-1}\)) |
| :--- | :--- | :--- | :--- |
| **Site A** | Young Pine (15 yrs) | 850 | +120 |
| **Site B** | Mature Pine (80 yrs) | 820 | +280 |
| **Site C** | Deciduous Broadleaf (40 yrs) | 1100 | +390 |
| **Site D** | Old Growth Deciduous (150+ yrs) | 1150 | +95 |
| **Site E** | Mixed Forest (50 yrs) | 950 | +310 |

Analyse the data shown in Figure 1.

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解題

### Key Analytical Points:

1. **Age-related Trends in Carbon Sequestration (NEP):**
- Mid-aged forests exhibit the highest rates of carbon sequestration. Site C (Deciduous Broadleaf, 40 yrs) and Site E (Mixed Forest, 50 yrs) have the highest NEP values of +390 and +310 \(g\ C\ m^{-2}\ yr^{-1}\) respectively.
- In contrast, the youngest forest (Site A, 15 yrs) and the oldest forest (Site D, 150+ yrs) have much lower rates of +120 and +95 \(g\ C\ m^{-2}\ yr^{-1}\) respectively. This reflects the biological reality that carbon uptake rates slow down as a forest reaches climax community/old-growth status.

2. **The Role of Precipitation and its Anomalies:**
- Higher annual precipitation generally corresponds to higher productivity among active growth stages (e.g., Site C at 1100 mm has an NEP of +390, whereas Site A at 850 mm has an NEP of +120).
- However, Site D presents a major anomaly: it receives the highest annual precipitation (1150 mm) but records the lowest NEP (+95 \(g\ C\ m^{-2}\ yr^{-1}\)). This demonstrates that successional age and forest structure can override climatic inputs like precipitation in determining carbon sink strength.

3. **Comparison within Same Forest Category (Pine):**
- Mature Pine (Site B, 80 yrs) has more than double the carbon sequestration rate of Young Pine (Site A, 15 yrs) (+280 vs +120 \(g\ C\ m^{-2}\ yr^{-1}\)) despite receiving slightly less annual precipitation (820 mm compared to 850 mm).

4. **Data Manipulation:**
- The maximum carbon sequestration rate (Site C, +390 \(g\ C\ m^{-2}\ yr^{-1}\)) is over four times (approximately 4.1 times) greater than the minimum rate recorded at the old-growth site (Site D, +95 \(g\ C\ m^{-2}\ yr^{-1}\)).

評分準則

### Marking Scheme & Level Descriptors

**[6 marks]**

| Level | Marks | Descriptor |
| :--- | :--- | :--- |
| **Level 2** | **4–6** | - Clear, logical analysis of the data showing an understanding of both overall trends and anomalies.
- Well-structured response that makes effective use of data (manipulating values or directly comparing sites).
- Synthesises relationships between age, precipitation, and carbon sequestration. |
| **Level 1** | **1–3** | - Mainly descriptive account of individual sites with limited analysis.
- Simplistic statements about the data without synthesizing trends or identifying key anomalies.
- Minimal or no manipulation of data; may just list numbers directly from the table. |
| **Level 0** | **0** | - No creditable content. |

### Indicative Content / Points to look for:
- **Trend Identification:** Identifies that mid-aged forests are the strongest sinks, while youngest and oldest are the weakest.
- **Anomaly Identification:** Identifies Site D as a key anomaly (highest precipitation but lowest NEP).
- **Comparison/Synthesis:** Compares young vs. mature pine to highlight age-related development over precipitation.
- **Data Manipulation:** Calculates differences or ratios (e.g., Site C is ~4.1 times larger than Site D; Mature Pine is +160 \(g\ C\ m^{-2}\ yr^{-1}\) higher than Young Pine).

題目 3 · Data Analysis

6 分

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解題

評分準則

題目 4 · Assess

6 分

Assess the role of terrestrial carbon sinks in regulating the global carbon cycle.

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解題

### Indicative Content

**AO1 (Knowledge and Understanding):**
* Identification of key terrestrial carbon sinks: tropical rainforests, boreal forests (taiga), peatlands, grasslands, and soil organic matter.
* Understanding of the processes involved in terrestrial sequestration: photosynthesis, litterfall, humification, and soil carbon storage.
* Knowledge of the scale of terrestrial carbon storage (e.g., soils hold about 1,500-2,400 GtC, vegetation holds around 550 GtC) compared to atmospheric and oceanic pools.

**AO2 (Application and Assessment):**
* **Evaluation of significance:** Terrestrial sinks act as a crucial immediate buffer against rising atmospheric \(\text{CO}_2\) levels. Without active forest and soil sequestration, global warming would be significantly more advanced.
* **Vulnerability and Permanence:** Unlike deep ocean sinks which store carbon for thousands of years, terrestrial carbon is highly dynamic and volatile. Forest fires, deforestation, and insect infestations can rapidly convert a terrestrial sink into a carbon source.
* **Feedback loops:** Rising global temperatures are causing permafrost feedback loops. Thawing Arctic soils release ancient organic carbon as methane and carbon dioxide, turning a historic sink into an active source. Similarly, climate-induced drought in the Amazon is reducing its net primary productivity (NPP) and causing forest dieback.

**Conclusion:**
While terrestrial sinks are highly effective short-to-medium term regulators of the atmospheric carbon balance, their long-term regulatory capacity is highly unstable and increasingly compromised by positive feedback loops and human land-use changes.

評分準則

### Marking Grid (6 Marks)

**Level 2 (4-6 marks):**
* **Detailed and coherent** knowledge of terrestrial carbon sinks and processes (AO1).
* **Effective, critical assessment** of their role, limitations, and vulnerability to positive feedbacks (AO2).
* Geographical terminology is used accurately throughout.

**Level 1 (1-3 marks):**
* **Basic or descriptive** knowledge of terrestrial carbon stores (e.g., plants/soils store carbon) with limited depth (AO1).
* **Generalized assessment** with little appreciation of the dynamic nature, instability, or limitations of terrestrial sinks (AO2).
* Information may be unstructured or rely on simple assertions.

題目 5 · Extended Essay

20 分

Assess the extent to which positive feedback loops within and between the water and carbon cycles pose a greater threat to the global climate system than negative feedback mechanisms.

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解題

Introduction should define positive and negative feedback loops, and briefly outline how the water and carbon cycles are intrinsically linked (e.g., through photosynthesis, respiration, and oceanic dissolution). The essay should establish a clear thesis: while negative feedbacks exist, positive feedbacks present a far greater threat because of their capacity to accelerate climate change toward critical tipping points. Body Paragraph 1: Positive feedbacks in the water cycle. Discuss the ice-albedo feedback (ice melt reduces reflectivity, leading to more absorption of solar radiation and further warming) and the water vapor feedback (warming increases atmospheric capacity for water vapor, a potent greenhouse gas, leading to further warming). Body Paragraph 2: Positive feedbacks in the carbon cycle and cycle interactions. Discuss permafrost thawing, where rising temperatures melt permafrost, initiating anaerobic decay that releases methane and carbon dioxide, leading to enhanced warming. Discuss forest dieback (e.g., the Amazon), where reduced rainfall and rising temperatures lead to tree death, transforming carbon sinks into carbon sources and disrupting regional hydrological cycles. Body Paragraph 3: Negative feedback mechanisms. Discuss the negative feedback of carbon fertilization, where elevated carbon dioxide levels can stimulate plant growth and increase carbon sequestration. Mention the potential of increased low-level cloud cover from increased evaporation to reflect incoming solar radiation, cooling the Earth, though noting that high-level clouds can have the opposite effect. Note that geological negative feedbacks, such as silicate weathering, operate on timescales too slow to mitigate current anthropogenic warming. Conclusion and Synthesis: Conclude with a clear evaluation. Positive feedback loops pose a disproportionately greater threat because they can lead to runaway warming and irreversible thresholds (tipping points). In contrast, negative feedback systems are limited in capacity and operate on timescales too slow to counteract rapid, human-driven environmental changes.

評分準則

AO1 (10 marks): Knowledge and understanding of the processes operating within and between the water and carbon cycles, including specific feedback loops (e.g., ice-albedo, water vapor, permafrost thaw, carbon fertilization) and their impact on the global climate. AO2 (10 marks): Application of knowledge and understanding to analyze and evaluate the balance of threats posed by positive vs. negative feedback systems. Level 4 (16-20 marks): Demonstrates detailed, accurate, and wide-ranging knowledge of both water and carbon cycles and their feedback mechanisms. Offers a sophisticated, balanced evaluation of both positive and negative feedbacks, explicitly weighing their spatial and temporal scales. The writing is highly structured, coherent, and uses precise geographical terminology to reach a clear, well-supported conclusion. Level 3 (11-15 marks): Demonstrates good knowledge of several feedback loops, though some explanations may lack depth. Offers a clear evaluation comparing positive and negative feedbacks, but the argument may be slightly unbalanced or lack detailed discussion of timescales or tipping points. Level 2 (6-10 marks): Shows some geographical knowledge of feedbacks, but may treat the water and carbon cycles as largely separate or describe processes with limited accuracy. Evaluation is present but superficial, perhaps asserting that positive feedbacks are worse without explaining why. Level 1 (1-5 marks): Shows basic or fragmented knowledge of the cycles with little to no clear understanding of feedback loops. Little or no evaluative comment is present.

乙部: 選答 Physical Landscape

Answer one optional landscape question (Coasts, Deserts, or Glaciers).

4 題目 · 36 分

題目 1 · Structured Outline

4 分

Outline the concept of a sediment cell.

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解題

A sediment cell (or littoral cell) is a distinct area of coastline within which the movement of coarse sediment (sand and shingle) is largely self-contained. 1. Closed System: It is considered a closed system because sediment does not easily transfer across its boundaries. 2. Boundaries: Its boundaries are usually determined by major topographical features such as large headlands, estuaries, or deep-water trenches that prevent lateral sediment transport. 3. Components: The cell operates through three main components: Sources/Inputs (where sediment enters, e.g., cliff erosion, river discharge), Transfers/Pathways (e.g., longshore drift, currents moving sediment), and Sinks/Outputs (areas of accumulation, e.g., beaches, spits, sand dunes). 4. Dynamic Equilibrium: Feedback loops exist within the cell to maintain balance; if sediment is removed from one area, erosion may increase elsewhere to compensate.

評分準則

Award up to 4 marks for a detailed and coherent outline. - Max 2 marks for simple definitions or listing components without explanation. - To achieve 3 or 4 marks, response must clearly explain the closed-system nature, boundary definition, and the dynamic relationships between sources, transfers, and sinks. Marking points: - 1 mark: defining a sediment cell as a stretch of coastline where sediment movement is self-contained / operates as a closed system. - 1 mark: explaining how boundaries are determined by physical barriers like headlands or deep estuaries. - 1 mark: identifying and explaining key components: inputs/sources (e.g., cliff erosion) and/or outputs/sinks (e.g., beaches). - 1 mark: explaining transfers/processes (e.g., longshore drift) that move sediment between sources and sinks. - 1 mark: mentioning the concept of dynamic equilibrium or feedback mechanisms within the cell.

題目 2 · Mathematical Calculation & Evaluation

6 分

Table 1 shows the glaciological mass balance data for Nordbreen Glacier, a temperate valley glacier in Norway, between 2018 and 2022. Mass balance is recorded in meters of water equivalent (m w.e.).

Table 1: Mass balance data for Nordbreen Glacier (2018-2022)
- 2018: Winter Accumulation = +1.80 m w.e. | Summer Ablation = -2.10 m w.e.
- 2019: Winter Accumulation = +2.15 m w.e. | Summer Ablation = -1.95 m w.e.
- 2020: Winter Accumulation = +1.65 m w.e. | Summer Ablation = -2.40 m w.e.
- 2021: Winter Accumulation = +1.90 m w.e. | Summer Ablation = -2.35 m w.e.
- 2022: Winter Accumulation = +1.50 m w.e. | Summer Ablation = -2.20 m w.e.

(a) Calculate the mean annual net mass balance for Nordbreen Glacier over the five-year period (2018-2022). Show your working. (2 marks)

(b) Using your calculated value and the dataset, evaluate what this indicates about the health of the glacier and its position relative to dynamic equilibrium. (4 marks)

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解題

Part (a) Calculation:
First, calculate the annual net mass balance (Accumulation + Ablation) for each year:
- 2018: \(+1.80 + (-2.10) = -0.30\text{ m w.e.}\)
- 2019: \(+2.15 + (-1.95) = +0.20\text{ m w.e.}\)
- 2020: \(+1.65 + (-2.40) = -0.75\text{ m w.e.}\)
- 2021: \(+1.90 + (-2.35) = -0.45\text{ m w.e.}\)
- 2022: \(+1.50 + (-2.20) = -0.70\text{ m w.e.}\)

Next, sum the net annual mass balances over the 5-year period:
\((-0.30) + 0.20 + (-0.75) + (-0.45) + (-0.70) = -2.00\text{ m w.e.}\)

Finally, divide by the number of years (5) to find the mean annual net mass balance:
\(-2.00 \div 5 = -0.40\text{ m w.e. per year.}\)

Part (b) Evaluation:
- The negative mean annual net mass balance of \(-0.40\text{ m w.e.}\) indicates that Nordbreen Glacier is experiencing a persistent net deficit, where overall ablation exceeds accumulation.
- In 4 out of the 5 years shown, the glacier experienced a negative mass balance, with only 2019 displaying a positive surplus (\(+0.20\text{ m w.e.}\)), highlighting that the overall trend is heavily dominated by mass loss.
- This consistent deficit indicates that the glacier is out of dynamic equilibrium with the contemporary climate. The glacial system is in a state of disequilibrium, shedding mass and volume.
- As a physical system, the glacier will respond to this negative balance by seeking a new equilibrium state. This will manifest as a retreat of the glacier snout (terminus) up-valley and an upward migration of the equilibrium line altitude (ELA) to a higher elevation where cooler temperatures can stabilize the mass balance. The glacier is undergoing negative net adjustments to adjust its snout position to match the reduced winter accumulation inputs and high summer ablation outputs.

評分準則

Part (a) Calculation [Max 2 marks]:
- 1 mark for showing correct working, calculating individual annual balances and summing them to \(-2.00\text{ m w.e.}\) (or setting up the equation correctly as \([(-0.30) + 0.20 + (-0.75) + (-0.45) + (-0.70)] / 5\)).
- 1 mark for the correct final answer of \(-0.40\text{ m w.e. per year}\) (accept \(-0.4\text{ m w.e.}\) or \(-0.4\text{ m w.e. per year}\); reject positive values or figures without units if the working is also absent).

Part (b) Evaluation [Max 4 marks - Levelled]:
- Level 2 (3-4 marks): Clear and well-developed geographical evaluation. Explicitly links the negative mean mass balance (\(-0.40\text{ m w.e.}\)) and the fact that 4 out of 5 years are negative to the retreat of the glacier snout and the up-valley migration of the equilibrium line. Mentions that the glacier is in a state of disequilibrium/negative feedback response, with ablation exceeding accumulation.
- Level 1 (1-2 marks): Basic or descriptive evaluation. May notice that most years are negative or that the glacier is melting/shrinking, but lacks precise geographical terminology (e.g., equilibrium line, dynamic equilibrium, snout retreat, accumulation/ablation zones).

題目 3 · Data Analysis & Assess

6 分

### Table 1: Coastal cliff characteristics and average retreat rates over a 10-year monitoring period.

| Site | Lithology & Structure | Average Retreat Rate (\(\text{m/yr}\)) | Dominant Failure/Erosion Processes observed |
|---|---|---|---|
| **A** | Massive limestone (highly jointed, impermeable) | \(0.12\) | Rock falls along joint planes; solution (carbonation) |
| **B** | Glacial till (unconsolidated clay and silt, permeable) | \(2.45\) | Rotational slumping; mudflows after intense rain events |
| **C** | Well-cemented sandstone (sub-horizontal bedding planes) | \(0.35\) | Wave quarrying; abrasion at the cliff foot |
| **D** | Interbedded sands and weak clays (permeable sands overlying impermeable clays) | \(1.85\) | Rotational landslides; rapid basal removal of debris by wave action |

Using the data in **Table 1** and your own knowledge, assess the extent to which lithology and rock structure determine the rate and character of coastal cliff retreat.

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解題

### Data Analysis:
* **Contrasting Rates:** There is a clear divide in retreat rates between consolidated rock types and weak/unconsolidated sediments. Site B (glacial till) has the highest retreat rate at \(2.45\text{ m/yr}\), which is more than 20 times faster than Site A (limestone) at \(0.12\text{ m/yr}\).
* **Contrasting Styles:** Lithological structure directly influences the failure mechanism. Jointed limestone (Site A) experiences localized rock falls, whereas permeable sand overlying impermeable clay (Site D) results in rotational landslides. Unconsolidated glacial till (Site B) experiences mudflows and slumping.

### Assessment of Lithology & Structure as Determinants:
* **High Extent:** Lithology (rock type) determines rock strength and resistance to marine erosion. Unconsolidated rocks lack cohesion and fail easily under hydraulic action. Geological structure (bedding planes, joints, permeability) determines pathways for water and weak zones. For instance, the interbedded permeable/impermeable layers at Site D create a pore-water pressure plane that actively promotes rotational landslides.
* **Other Significant Factors:** While lithology sets the threshold for erosion, other variables must be present to drive the retreat:
1. **Sub-aerial Processes (Climate):** Heavy rainfall is specifically noted at Site B as triggering mudflows. Without water to lubricate and increase weight, mass movement rates would decrease.
2. **Marine Energy (Waves):** At Site D, "rapid basal removal of debris by wave action" is crucial. If waves do not clear the fallen debris, it accumulates at the base, protecting the cliff and slowing down the retreat rate, regardless of how weak the lithology is.
3. **Human Interventions:** Coastal defenses (e.g., sea walls or rip-rap) can artificially decouple a weak cliff (like Site B) from marine processes, drastically reducing the retreat rate despite the weak lithology.

評分準則

**Level 2 (4–6 marks):**
* **Analysis:** Clear, structured analysis of the data in Table 1. Explicitly contrasts the rates of consolidated vs. unconsolidated cliffs and references specific processes (e.g., rock falls vs. slumping).
* **Assessment:** Makes a clear, balanced assessment of the 'extent' to which lithology determines retreat. Recognizes that geology acts as a primary control but must be coupled with active marine energy (basal removal) and atmospheric conditions (rainfall triggering slumping).
* **Geographical terminology:** Accurate use of terms such as lithology, pore-water pressure, mass movement, unconsolidated, and hydraulic action.

**Level 1 (1–3 marks):**
* **Analysis:** Basic description of the table, perhaps listing the sites and rates with limited attempt to synthesize or compare them.
* **Assessment:** Isolated points or a descriptive summary of cliff erosion with little or no assessment of the 'extent' or the role of other factors.
* **Geographical terminology:** Limited or incorrect use of subject-specific terminology.

**Accept/Reject Notes:**
* **Accept** calculations of difference (e.g., Site B retreats approximately 20.4 times faster than Site A; Site D retreats about 5.3 times faster than Site C).
* **Reject** answers that focus purely on wave types (destructive/constructive) without referencing the data provided in Table 1.

題目 4 · essay

20 分

Assess the view that eustatic sea level change is the primary driver of coastal landscape development over time.

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解題

Eustatic sea level change refers to global variations in sea level resulting from changes in the volume of water in the oceans (e.g., thermal expansion or melting ice sheets) or changes in the shape of the ocean basins. While eustatic changes establish the macro-scale structural baseline for coastlines, suggesting it is the sole 'primary driver' oversimplifies the complex, multi-scalar nature of coastal landscape development. This essay will argue that while eustatic sea level change acts as a fundamental catalyst that dictates shoreline positions, coastal landscapes are ultimately shaped by a dynamic equilibrium involving isostatic adjustments, tectonic activity, geological structures, and ongoing marine and subaerial processes.

Eustatic sea level changes are crucial in creating distinctive macro-landforms. During glacial periods (such as the Devensian), water was locked up in ice sheets, causing global sea levels to drop by up to 120 metres. Subsequent post-glacial warming led to rapid eustatic sea level rise (Flandrian Transgression), submerging coastal valleys and creating submergent landforms. Notable examples include rias (flooded river valleys, such as Kingsbridge Estuary in Devon), fjords (flooded glaciated valleys with steep profiles, such as Milford Sound in New Zealand), and Dalmatian coastlines (parallel flooded valleys, such as the Adriatic coast of Croatia). Conversely, periods of eustatic fall create emergent landforms, such as raised beaches and abandoned marine cliffs (found along the Isle of Arran, Scotland). These features clearly demonstrate that eustatic changes initiate the geographical template of a coast.

However, eustatic change cannot be viewed in isolation from isostatic change—the localized, vertical movement of the Earth's crust. During glaciation, the immense weight of ice sheets depresses the lithosphere (isostatic depression). When the ice melts, the crust rebounds slowly (isostatic recovery). This creates a complex interplay. For instance, in the UK, the northwest of Scotland is rising due to ongoing isostatic recovery at a rate of up to 1-2mm per year, resulting in prominent emergent landforms. Meanwhile, the southeast of England is sinking due to isostatic tilting, exacerbating the effects of eustatic sea level rise. Thus, the local relative sea level change—the combined product of both eustatic and isostatic factors—is a more accurate driver of landscape change than global eustatic change alone.

Furthermore, the long-term development of coastal landscapes is heavily mediated by geology (lithology and structure). The resistance of rocks determines the rate at which emergent or submergent landforms are modified. For instance, soft unconsolidated sediments (like the boulder clay of the Holderness Coast) undergo rapid erosion and modification regardless of sea level trends, whereas resistant granitic cliffs in Cornwall resist marine attack over millennia. Geological structure (concordant vs. discordant) dictates the formation of bays, headlands, and coves (such as Lulworth Cove on the Dorset coast), proving that spatial variation in landforms is often governed more by geological constraints than by uniform eustatic shifts.

In addition, contemporary coastal development is continuously driven by marine processes (waves, tides, currents) and subaerial processes (weathering, mass movement). High-energy waves drive marine erosion (hydraulic action, abrasion), creating wave-cut platforms, arches, and stacks. Simultaneously, marine deposition forms spits, tombolos, and barrier islands (such as Chesil Beach), which are constantly reshaped by longshore drift and sediment budgets (sediment cells). Subaerial weathering and mass movement (e.g., rotational slumping on clay cliffs) further modify the slope profiles of coastal landforms over shorter, human-scale timeframes. These processes operate constantly, modifying the macro-template set by historical sea level changes.

In conclusion, while eustatic sea level change is the primary temporal trigger that establishes the position of the shoreline and initiates the creation of emergent and submergent landforms, it is not the sole driver of coastal landscape development. A coastal landscape is a product of relative sea level changes (the synthesis of eustatic and isostatic processes), structurally constrained by local lithology and geology, and continuously remodelled by dynamic marine and subaerial processes over multiple spatial and temporal scales.

評分準則

This question requires students to assess the relative importance of eustatic sea level change against other factors in shaping coastal landscapes over time. Responses should show clear knowledge of coastal systems and how different processes interact.

Marking Breakdown:
- Level 4 (16-20 marks): Sophisticated, well-structured, and highly evaluative. Demonstrates comprehensive understanding of the distinction between eustatic and isostatic sea level changes. Effectively analyses how emergent and submergent landforms are created and modified. Evaluates other drivers such as geology, marine processes, and subaerial processes. Uses precise geographical terminology and detailed case studies/examples (e.g., Isle of Arran, Holderness, Dorset, etc.).
- Level 3 (11-15 marks): Clear and structured response. Demonstrates good knowledge of eustatic changes and resulting landforms (rias, fjords, raised beaches). Offers some evaluation of other factors like geology or wave processes, though the analysis may be less balanced or detailed. Good use of geographical terminology.
- Level 2 (6-10 marks): Descriptive rather than evaluative. Explains eustatic sea level change and lists some coastal landforms but lacks depth in explaining the mechanisms of change. Limited reference to isostatic adjustment or other drivers. May lack structure or specific real-world examples.
- Level 1 (1-5 marks): Isolated or superficial knowledge. Struggles to define eustatic change accurately. Mentions basic coastal landforms (like cliffs or beaches) with little to no link to sea level change or long-term development.

Accept:
- Balanced arguments that evaluate both temporal scales (long-term geological time vs. short-term contemporary processes) and spatial scales (global eustatic vs. local isostatic/geological dynamics).
- Appropriate classification of landforms into emergent (raised beaches, marine terraces) and submergent (rias, fjords, dalmatian coasts).
- Reference to human management as a modern driver modifying natural development.

Reject:
- Confusing eustatic (water volume) and isostatic (land level) changes without distinguishing their causes.

部分 C: 選答 Physical Hazard/Ecosystem

Answer one optional hazard/ecosystem question.

5 題目 · 48 分

題目 1 · Structured Outline

4 分

Outline how vegetation characteristics can influence the intensity and spread of wildfires.

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解題

Vegetation characteristics are a key determinant of wildfire behavior. Firstly, the moisture content of vegetation directly dictates flammability; during periods of drought, live foliage and dead organic litter lose moisture, allowing fires to ignite much more easily and burn with greater intensity. Secondly, the physical structure and size of the vegetation (fuel size) affect the rate of spread; fine fuels, such as dry grasses or pine needles, have a high surface-area-to-volume ratio, meaning they dry out rapidly and ignite quickly, facilitating a fast-moving fire front. Thirdly, the chemical composition of certain species increases fire severity; plants containing volatile oils and resins, such as eucalyptus or chaparral shrubs, ignite explosively and produce highly intense, hot fires. Finally, the vertical and horizontal continuity of vegetation (fuel load) allows fires to transition from ground level to the canopy, creating highly destructive crown fires.

評分準則

Award 1 mark for each basic point identified (up to 2), with an additional mark for development/explanation (up to 2). For example: - Dryness or moisture content of vegetation (1 mark) determines how easily a fire ignites and how intensely it burns (1 mark). - Fine fuels like grasses have a high surface-area-to-volume ratio (1 mark) which allows fires to catch quickly and spread rapidly (1 mark). - Chemical properties of plants, such as eucalyptus containing volatile oils (1 mark), can lead to highly explosive and intense burns (1 mark). - Vertical fuel continuity, such as ladder fuels (1 mark), allows ground fires to climb into the canopy, causing intense and fast-moving crown fires (1 mark). Maximum 4 marks.

題目 2 · Data Analysis

6 分

Figure 1 shows wildfire data for five forest regions in a high-income country between 2010 and 2020: Region A (North): Summer Temp Anomaly +0.4 degrees C, Annual Wildfire Frequency 120, Total Area Burned 45,000 hectares. Region B (East): Summer Temp Anomaly +1.2 degrees C, Annual Wildfire Frequency 340, Total Area Burned 210,000 hectares. Region C (South): Summer Temp Anomaly +1.8 degrees C, Annual Wildfire Frequency 480, Total Area Burned 520,000 hectares. Region D (West): Summer Temp Anomaly +0.9 degrees C, Annual Wildfire Frequency 210, Total Area Burned 135,000 hectares. Region E (Central): Summer Temp Anomaly +1.5 degrees C, Annual Wildfire Frequency 410, Total Area Burned 380,000 hectares. Analyze the data in Figure 1, focusing on the relationship between temperature anomalies, wildfire frequency, and total area burned. [6 marks]

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解題

The data in Figure 1 demonstrates a strong, positive correlation between average summer temperature anomalies, annual wildfire frequency, and the total area burned across all five forest regions. Region A (North), which has the lowest summer temperature anomaly (+0.4 degrees C), also experiences the lowest wildfire frequency (120) and the smallest total area burned (45,000 hectares). In contrast, Region C (South) experiences the highest temperature anomaly (+1.8 degrees C), resulting in the highest annual wildfire frequency (480) and the largest total area burned (520,000 hectares). Crucially, the data shows that the relationship is non-linear; as temperature anomalies increase, the total area burned increases disproportionately compared to wildfire frequency. For example, comparing Region B (+1.2 degrees C anomaly, 340 fires, 210,000 ha burned) to Region E (+1.5 degrees C anomaly, 410 fires, 380,000 ha burned) reveals that a 0.3 degrees C increase in temperature anomaly and a 20.5 percent increase in wildfire frequency is associated with an 81 percent increase in total area burned. This indicates that higher temperature anomalies dramatically escalate wildfire severity and propagation, leading to exponentially greater landscape damage.

評分準則

Level 2 (4-6 marks): Focuses clearly on the relationships between the variables rather than just describing individual regions. Identifies key patterns (e.g., positive correlation) and nuances (e.g., the non-linear, exponential increase in area burned at higher temperature anomalies). Effectively and accurately incorporates specific data points from Figure 1 to support the analysis. Level 1 (1-3 marks): Primarily descriptive, listing data for individual regions without synthesizing a coherent analysis of the relationships. May identify a basic positive correlation but fails to analyze the disproportionate scale of area burned relative to temperature/frequency changes. Limited or inaccurate use of supporting data. Indicative Content: 1. Identification of a positive correlation across all three variables (as temperature anomaly increases, both frequency and area burned increase). 2. Use of extreme values to illustrate the correlation (e.g., Region A vs Region C). 3. Identification of non-linear/exponential trends, highlighting that area burned scales up disproportionately at higher temperature anomalies (e.g., comparing Region B to Region E, or Region D to Region B).

題目 3 · Discuss & Assess

9 分

Assess the extent to which the severity of wildfire impacts is determined by the level of economic development of the affected area.

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解題

In this question, students must explore how economic development influences wildfire vulnerability and impacts, while also recognizing other critical physical and human variables. AO1 (4 marks) requires showing knowledge of wildfire impacts (ecological, social, economic) and management strategies (prediction, prevention, response). AO2 (5 marks) requires evaluating whether wealthier areas (HICs) suffer less than poorer areas (LICs/NEEs). Points of analysis include: 1) High-income countries have advanced technology (such as satellite monitoring, GIS mapping, aerial fire retardant bombers) and strict building codes (such as fire-resistant materials in California), which can reduce loss of life. 2) However, HICs often experience immense economic losses because they have high-value real estate expanding into the wildland-urban interface (WUI). 3) Decades of total fire suppression policy in wealthy nations have ironically led to a dangerous accumulation of dry fuel loads, creating more intense and uncontrollable 'mega-fires'. 4) Low- and middle-income nations (such as Indonesia, Chile) may suffer higher death tolls and severe long-term respiratory health issues due to lack of immediate medical/evacuation infrastructure and reliance on peatland clearing fires that get out of control. 5) Ultimately, extreme meteorological events (such as El Nino, high wind speeds, and severe droughts exacerbated by climate change) can overwhelm even the most advanced and well-funded mitigation systems, showing that economic development is only one of several factors determining impact severity.

評分準則

AO1: 4 marks, AO2: 5 marks. Level 3 (7-9 marks): Demonstrates detailed, accurate, and wide-ranging knowledge of wildfire impacts and mitigation. Offers a clear, balanced, and sophisticated evaluation of the extent to which economic development determines these impacts, using well-integrated case study examples (such as comparing California/Australia with Indonesia/Chile). Level 2 (4-6 marks): Shows sound geographical knowledge of wildfire impacts. Evaluation is present but may lack depth, balance, or specific case study details, perhaps focusing primarily on describing impacts rather than assessing the causal role of development. Level 1 (1-3 marks): Demonstrates basic, fragmented, or generalized knowledge of wildfires. Evaluation is weak, absent, or highly subjective, with little to no reference to specific locations or varying levels of development.

題目 4 · Discuss & Assess

9 分

Assess the effectiveness of sustainable management strategies in protecting ecosystems that are under threat from human activity.

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解題

This question asks students to evaluate the success and limitations of sustainable management strategies applied to threatened ecosystems. AO1 (4 marks) requires demonstrating knowledge of human threats to ecosystems (such as deforestation, overfishing, agricultural encroachment) and various sustainable management approaches (such as zoning, national parks, ecotourism, community-led initiatives). AO2 (5 marks) requires applying this knowledge to analyze and assess the degree of success. Key points of discussion include: 1) Successful strategies often involve local community engagement, such as the extractive reserves in the Amazon (such as Chico Mendes Reserve) which provide sustainable livelihoods while preserving forest cover. 2) Marine protected areas (MPAs) and zoning (such as the Great Barrier Reef Marine Park) can successfully allow recovery of fish stocks and protect fragile habitats, but are highly dependent on surveillance and strict enforcement. 3) Many protected areas in LICs/NEEs are 'paper parks'—designated on paper but failing in practice due to corruption, underfunding, and lack of rangers to prevent illegal logging or poaching. 4) The pressure of global economic demand for resources (such as palm oil, beef, or minerals) often overrides local conservation laws. 5) Furthermore, localized management cannot prevent global environmental threats like ocean warming, acidification, and shifting climate zones, which degrade ecosystems regardless of local protection. To conclude, sustainable management is highly effective at managing direct local human impacts when properly funded and supported by local populations, but remains highly vulnerable to macro-economic forces and global climate change.

評分準則

AO1: 4 marks, AO2: 5 marks. Level 3 (7-9 marks): Shows comprehensive and precise knowledge of ecosystem threats and sustainability strategies. Provides a highly structured and balanced assessment of their effectiveness, with well-supported arguments and clear case study evidence (such as Amazon, coral reefs, or local heathlands/dunes). Level 2 (4-6 marks): Shows good general knowledge of ecosystem management. The assessment of effectiveness is present but may be unequal or rely more on description of the strategies rather than critical evaluation of their success/failure. Level 1 (1-3 marks): Basic or superficial understanding of ecosystems and management. Offers little or no evaluation, with a highly descriptive answer that lacks specific detail or geographical context.

題目 5 · essay

20 分

With reference to one or more areas you have studied, assess the extent to which the severity of wildfire impacts is determined more by human factors than by physical conditions.

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解題

Introduction:

Candidates should define wildfires and outline that the severity of their impacts (social, economic, and environmental) is a product of both physical conditions (which dictate fire behaviour, intensity, and spread) and human factors (which influence vulnerability, exposure, and the effectiveness of mitigation and response).

Physical Factors determining impact severity:

Climate and Weather: High temperatures, low relative humidity, and strong wind systems (e.g., the Santa Ana winds in California, or Diablo winds) drive rapid fire spread and make containment difficult. Periods of prolonged drought dry out fuel sources.

Fuel characteristics: Dry, resinous vegetation (e.g., Eucalyptus in Australia, Chaparral in California) burns intensely. Large accumulations of dead biomass provide high fuel loads.

Topography: Steep slopes allow fires to advance rapidly upslope due to convective preheating of vegetation.

Unpredictability: Spotting (winds carrying embers ahead of the main fire front) can bypass physical barriers, escalating the hazard beyond human control.

Human Factors determining impact severity:

The Wildland-Urban Interface (WUI): Expanding residential development into fire-prone ecosystems dramatically increases the exposure of populations and high-value property, raising economic losses and casualties.

Land Management and Fire Suppression: Historical policies of total fire suppression (e.g., in the US) have led to unnatural fuel build-ups, making subsequent fires far more intense. Conversely, prescribed burning can mitigate impacts.

Preparedness and Adaptation: Community planning, building codes (e.g., fire-resistant materials), evacuation routes, and early warning systems significantly reduce mortality and morbidity rates in high-income countries compared to unprepared regions.

Response and Suppression Capability: The availability of advanced technology (water bombers, satellite monitoring, professional and volunteer fire services) vs. lack of infrastructure and coordination in lower-income settings.

Case Studies/Examples:

High-income context (e.g., Camp Fire, California, 2018 or Black Summer, Australia, 2019-20): Despite massive suppression resources and warning systems, extreme physical conditions (winds, prolonged drought, high temperatures) coupled with high exposure in the WUI led to catastrophic economic loss and fatalities, proving that physical extremes can overwhelm human defenses.

Low-to-middle-income context (e.g., Indonesia peatland fires, 2015/2019): Driven heavily by human actions (slash-and-burn clearing for palm oil) and exacerbated by El Niño drought. Weak governance and limited response capacity led to prolonged, severe regional air pollution (haze), respiratory illnesses, and substantial carbon emissions, highlighting the predominance of human-driven vulnerability.

Conclusion:

An evaluative conclusion should synthesize the arguments. While physical conditions act as the necessary catalyst and driver of fire intensity (the physical hazard), human factors (decisions around land use, population distribution, preparedness, and mitigation) ultimately dictate the scale of human vulnerability and therefore determine the overall 'severity' of the hazard's impact on society.

評分準則

AQA A Level Marking Grid (20-mark essay):

This question assesses both AO1 (Knowledge and understanding of the nature of wildfires, their causes, impacts, and management responses - 10 marks) and AO2 (Application of knowledge to analyze and evaluate the relative importance of physical vs. human factors - 10 marks).

Level 4 (16-20 marks):

Demonstrates detailed, accurate, and wideranging geographical knowledge and understanding of wildfire hazards (AO1).

Offers a sophisticated, balanced, and well-structured evaluation of the relative importance of human factors versus physical conditions (AO2).

Explicitly references detailed case study material (e.g., specific dates, places, impact statistics, and management actions).

Expresses ideas clearly with specialist geographical terminology used effectively throughout. Consistent logical conclusion is reached.

Level 3 (11-15 marks):

Demonstrates good geographical knowledge and understanding of wildfires, their impacts, and management (AO1).

Provides a reasoned analysis and evaluation, though it may lack the depth or balance of Level 4 (AO2).

Includes appropriate case study support, though some details may be generic.

Structure is generally logical and clear, using appropriate terminology.

Level 2 (6-10 marks):

Demonstrates some basic knowledge of wildfires, but description may dominate over explanation and evaluation (AO1).

Evaluation of human vs. physical factors is limited, superficial, or heavily one-sided (AO2).

Case study evidence is thin, generalized, or contains inaccuracies.

May be unstructured with limited use of geographical terminology.

Level 1 (1-5 marks):

Demonstrates isolated, fragmented, or very basic knowledge of wildfire hazards (AO1).

No meaningful attempt to evaluate or address the 'to what extent' element of the question (AO2).

Lacks case studies or uses highly generalized examples.

Poorly structured with frequent grammatical errors.

Accept/Reject Guidelines:

Accept: A wide range of global case studies (e.g., Fort McMurray, California, Australia, Amazon, or Indonesia).

Accept: Discussion of climate change as a bridging factor (human-induced warming enhancing physical fire weather conditions).

Reject: Responses focusing purely on other tectonic or atmospheric hazards (e.g., tropical storms or earthquakes) without linking them directly to wildfires.

部分 D: 必答 Human Governance

Answer all questions. Focuses on Global Systems and Governance.

5 題目 · 40 分

題目 1 · Structured Outline

4 分

Outline how international laws and treaties help to protect one or more of the global commons.

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解題

The global commons (the atmosphere, oceans/high seas, outer space, and Antarctica) do not belong to any single nation, making international laws and treaties essential for their protection:

1. **Establishment of Collective Governance:** Treaties define the legal status of these areas, ensuring they are preserved for all humanity rather than exploited by individual states. For example, the Antarctic Treaty (1959) designates Antarctica as a scientific preserve and bans military activity.
2. **Prevention of Resource Exploitation:** International agreements establish strict rules regarding resource extraction. The Protocol on Environmental Protection to the Antarctic Treaty (Madrid Protocol) explicitly bans commercial mining, while the UN Convention on the Law of the Sea (UNCLOS) regulates deep-sea mining in international waters.
3. **Pollution Control and Conservation:** Environmental treaties regulate harmful emissions and waste disposal. For instance, the Montreal Protocol successfully phased out ozone-depleting substances to protect the atmosphere, and the Paris Agreement aims to limit global temperature rises.
4. **Enforcement and Monitoring:** Treaties often create governing bodies (such as the International Seabed Authority) to monitor compliance, issue permits, and resolve disputes between nations, helping prevent a 'tragedy of the commons'.

評分準則

Award 1 mark per valid, outlined point, with up to 2 marks for any single point that is developed with specific case detail or naming of treaties.

- **1 mark** for defining the global commons as resource domains that lie outside the political reach of any one nation-state.
- **1 mark** for identifying a specific international treaty (e.g., Antarctic Treaty, UNCLOS, Montreal Protocol, Outer Space Treaty).
- **1 mark** for explaining how a treaty prohibits military use or commercial exploitation (e.g., the Madrid Protocol banning mining in Antarctica).
- **1 mark** for explaining how global governance bodies (e.g., UNEP, International Seabed Authority) monitor and enforce compliance to prevent a 'tragedy of the commons'.

*Max 4 marks.*

題目 2 · Structured Outline

4 分

Outline how international laws and treaties help to protect one or more of the global commons.

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解題

評分準則

題目 3 · Data Analysis

6 分

Figure 1 shows the regional percentage share of global merchandise exports and imports in 2012 and 2022.

**Figure 1: Regional Shares of Global Merchandise Trade (Exports and Imports), 2012 and 2022 (%)**

| Region | Share of Global Exports 2012 (%) | Share of Global Exports 2022 (%) | Share of Global Imports 2012 (%) | Share of Global Imports 2022 (%) |
| :--- | :---: | :---: | :---: | :---: |
| Europe | 36.5 | 37.2 | 37.0 | 38.0 |
| Asia | 31.0 | 36.5 | 29.5 | 32.5 |
| North America | 13.0 | 11.5 | 17.5 | 16.0 |
| Latin America & Caribbean | 6.0 | 5.2 | 6.2 | 5.5 |
| Middle East | 7.5 | 5.1 | 5.0 | 4.8 |
| Africa | 3.2 | 2.1 | 3.1 | 2.4 |
| Oceania & Others | 2.8 | 2.4 | 1.7 | 0.8 |

Using Figure 1, analyze the patterns of global merchandise trade between 2012 and 2022.

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解題

### Model Response:

Figure 1 highlights a highly unequal distribution of global merchandise trade, dominated by core economic regions, alongside shifting dynamics over the decade.

* **Dominance of Europe and Asia:** These two regions dominate both import and export markets. Combined, their export share grew from \(67.5\%\) in 2012 to \(73.7\%\) in 2022. Europe remains the largest single trading region, with its export share increasing slightly from \(36.5\%\) to \(37.2\%\) and imports from \(37.0\%\) to \(38.0\%\).
* **The Rise of Asia:** Asia experienced the most significant growth of any region. Its share of global exports increased by \(5.5\) percentage points (from \(31.0\%\) to \(36.5\%\)), while imports rose by \(3.0\) percentage points to reach \(32.5\%\) in 2022. This marks Asia's transition into a major net exporter.
* **Decline of Peripheral Regions / Marginalisation:** Conversely, the global trade shares of peripheral and developing regions saw noticeable declines. Africa's share of global exports fell from an already low \(3.2\%\) in 2012 to just \(2.1\%\) in 2022 (a decline of over a third of its original share). Similarly, Latin America and the Caribbean saw its export share slip from \(6.0\%\) to \(5.2\%\).
* **North American Imbalances:** North America saw a contraction in its share of both global exports (falling from \(13.0\%\) to \(11.5\%\)) and imports (falling from \(17.5\%\) to \(16.0\%\)), but remained a substantial net importer across both time periods.

評分準則

### Marking Scheme & Level Descriptors (6 Marks)

**Level 2 (4–6 marks): Clear Analysis**
* Analyse patterns and/or identify trends/anomalies in the data rather than simply listing figures.
* Demonstrates clear understanding of the inequalities in global trade (e.g., core vs. periphery, rise of Asia vs. stagnation of Africa).
* Supports arguments with appropriate data manipulation (e.g., calculating percentage point changes or combining regional shares).
* Logical, well-structured response.

**Level 1 (1–3 marks): Basic Description**
* Largely descriptive, lifting data points directly from the table without synthesis or calculation.
* May only focus on one year or one aspect (only exports or only imports).
* Shows limited geographic understanding of global trade patterns.
* May contain structural weaknesses.

**0 marks**
* No creditworthy response.

### Key Points to Look For:
* **Core Dominance:** Europe and Asia control the vast majority of global trade (approx. \(73.7\%\) of exports and \(70.5\%\) of imports by 2022).
* **Asia's Growth:** Fastest expanding region in both import (+\(3.0\) percentage points) and export (+\(5.5\) percentage points) shares.
* **Marginalisation:** Underdeveloped regions like Africa and Latin America see declining shares, reinforcing the concept of unequal access to global markets.
* **Trade Balance Patterns:** North America is consistently a net importer (e.g., imports at \(16.0\%\) vs exports at \(11.5\%\) in 2022), whereas Asia is a growing net exporter.

題目 4 · assess

6 分

Figure 1 displays data regarding three international treaties aimed at protecting the global commons:

* **Treaty A (Antarctic Treaty System):** 56 signatory nations; 0 reported major environmental infractions since 2010; 100% of scientific stations inspected passed environmental audits.
* **Treaty B (Montreal Protocol - Atmosphere):** 198 signatory nations; 98% reduction in ozone-depleting substances since 1989; 12 minor non-compliance cases recorded in 2022.
* **Treaty C (UN Convention on the Law of the Sea - Oceans/High Seas):** 168 signatory nations; estimated 15,000 instances of illegal, unreported, and unregulated (IUU) fishing annually in international waters; 1.2% of the high seas designated as marine protected areas (MPAs) by 2023.

Using Figure 1 and your own knowledge, assess the extent to which global governance of the global commons can be considered successful.

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解題

### Model Answer Outline:

**1. Introduction & Definition:**
* Define the global commons as resource domains that lie outside the political reach of any one nation-state (e.g., oceans, atmosphere, Antarctica).
* State the core thesis: Global governance success is highly variable, depending on the nature of the commons, clarity of treaties, ease of monitoring, and national self-interest.

**2. Evidence of Success (Treaties A and B):**
* **The Atmosphere (Treaty B):** The data shows near-universal global cooperation (198 nations) and an exceptional 98% reduction in ozone-depleting substances. This indicates highly successful governance, largely because the issue had clear scientific consensus, manageable chemical alternatives, and clear global consequences.
* **Antarctica (Treaty A):** Shows high compliance (0 major infractions) and effective enforcement mechanisms (100% inspection pass rates). This indicates successful preservation, though its membership is much smaller (56 nations), meaning it is governed by a smaller 'club' rather than a fully representative global body.

**3. Evidence of Failure/Limitations (Treaty C):**
* **The Oceans (Treaty C):** The high seas represent a significant failure of global governance. Despite 168 signatories, there are 15,000 annual instances of IUU fishing, and only 1.2% of the high seas are protected.
* The vast scale of the oceans makes monitoring and enforcement exceptionally difficult. National economic interests and sovereignty often override collective environmental stewardship, leading to a 'tragedy of the commons'.

**4. Conclusion:**
* Conclude that global governance is highly successful when scientific consensus aligns with political will and alternatives exist (Atmosphere), or when access is geographically restricted and strictly regulated (Antarctica). However, for vast, open-access resources with high commercial value (Oceans), governance remains largely ineffective due to enforcement deficits.

評分準則

**Marking Principles:**
* **AO1 (3 marks):** Knowledge and understanding of the concept of the global commons and the mechanisms of global governance.
* **AO2 (3 marks):** Application of knowledge to analyze and evaluate the data provided in Figure 1, assessing the varying success of governance.

**Level Descriptors:**

* **Level 2 (4–6 marks):**
* Shows clear, purposeful geographical understanding of the global commons (AO1).
* Applies knowledge to perform a balanced, well-structured assessment of the data (AO2).
* Directly compares the successes (Treaties A & B) and failures (Treaty C) using specific data points from the stimulus.
* Reaches a clear, reasoned conclusion about the 'extent' of success.

* **Level 1 (1–3 marks):**
* Shows basic or fragmented knowledge of global governance or the global commons (AO1).
* Mainly describes the data without evaluating what it reveals about the effectiveness of governance (AO2).
* May focus on only one treaty or fail to construct a balanced argument.
* Lacks a clear concluding assessment.

題目 5 · Extended Essay

20 分

Evaluate the extent to which geopolitical tensions and national self-interest limit the effectiveness of global governance.

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解題

### Introduction
- **Definition**: Global governance refers to the collective efforts by sovereign states, international organisations (e.g., the UN, WTO, IMF), and non-state actors to address transboundary issues and manage global commons.
- **Thesis**: While global governance has achieved notable successes, its efficacy is ultimately hostage to the willingness of sovereign nation-states to cooperate. Geopolitical tensions and national self-interest remain the most significant barriers to addressing urgent global challenges like climate change, trade disputes, and the protection of the global commons.

### Body Paragraph 1: National Self-Interest as a Barrier to Climate Governance
- **Argument**: Nation-states often prioritize domestic economic growth and energy security over long-term global environmental goals.
- **Evidence**:
- The Paris Agreement (2015) relies on Nationally Determined Contributions (NDCs) which are voluntary and legally non-binding. This design reflects the reluctance of sovereign nations (particularly major polluters like the US, China, and India) to accept top-down, legally enforceable emissions targets that might harm economic competitiveness.
- The fluctuating commitment of major powers (e.g., the United States' withdrawal from the agreement in 2017 and subsequent re-entry in 2021) demonstrates how domestic political shifts can destabilize international climate governance.
- The persistent conflict between developed nations (historical emitters) and developing nations (demanding 'climate justice' and financial assistance) highlights how national self-interest stalls progress during COP negotiations.

### Body Paragraph 2: Geopolitical Rivalries and the Paralysis of Global Institutions
- **Argument**: Geopolitical competition between superpower states can paralyse key global institutions, preventing them from carrying out their mandates.
- **Evidence**:
- **The World Trade Organization (WTO)**: The dispute settlement mechanism of the WTO has been effectively paralyzed because the United States has repeatedly blocked the appointment of new judges to its Appellate Body, reflecting national self-interest in bypassing multilateral rules to wage trade disputes unilaterally.
- **The United Nations Security Council (UNSC)**: The use of veto power by permanent members (P5) to shield themselves or their allies (e.g., Russia regarding Ukraine, the US regarding Israel/Palestine) prevents cohesive global action during humanitarian crises, undermining the UN's credibility as a global governor.

### Body Paragraph 3: Management of the Global Commons (e.g., Antarctica)
- **Argument**: The protection of global commons (such as Antarctica) serves as a key litmus test. While the Antarctic Treaty System (ATS) has successfully preserved the continent for peace and science, geopolitical undercurrents threaten its future.
- **Evidence**:
- **Success**: The ATS (1959) and the Protocol on Environmental Protection (Madrid Protocol, 1991) have successfully banned military activity and mineral resource extraction. This represents highly effective global governance based on consensus.
- **Limitations**: The ban on mining is subject to potential review after 2048. Countries such as China and Russia have steadily expanded their scientific stations and maritime activity in the Southern Ocean, which critics argue is a strategic positioning for future resource extraction (bioprospecting, minerals, and fishing), showcasing how long-term national interest can undermine environmental protections.

### Body Paragraph 4: Counter-arguments: Successful Global Governance
- **Argument**: Global governance can be highly effective when there is clear scientific consensus, mutual benefit, and low economic displacement.
- **Evidence**:
- **The Montreal Protocol (1987)**: Widely considered the most successful global environmental treaty, it successfully phased out 99% of ozone-depleting substances (CFCs). Success was driven by clear alternatives to CFCs, a robust funding mechanism to assist developing nations, and strong scientific consensus.
- **Global Health and Aviation**: Organizations like the World Health Organization (WHO) and the International Civil Aviation Organization (ICAO) maintain highly effective, day-to-day functional governance because all states benefit from standardized health regulations and safe, predictable global air travel.

### Conclusion
- Geopolitical tensions and national self-interest do not make global governance entirely impossible, but they do define its limits.
- Where national interests align with international cooperation (e.g., safe air travel, ozone recovery), governance is highly effective.
- However, on complex, existential issues where collective action demands economic sacrifice or a compromise of state sovereignty (such as deep climate mitigation, resource exploitation, or security crises), geopolitical competition and domestic priorities remain highly limiting factors, often reducing global agreements to weak, voluntary, or deadlocked frameworks.

評分準則

### Marking Scheme (20 Marks)

#### Level 4 (16–20 marks) - Detailed, coherent and evaluative:
- **AO1 (10 marks)**: Demonstrates comprehensive, highly accurate, and systematic knowledge and understanding of global systems, global governance, and the role of sovereign states/institutions.
- **AO2 (10 marks)**: Applies knowledge and understanding to offer a clear, critical, and balanced evaluation of the extent to which geopolitical tensions and national self-interest limit governance. Draws on well-chosen, detailed case studies (e.g., Paris Agreement, Antarctic Treaty System, WTO, Montreal Protocol).
- **Characteristics**: Explicitly addresses the 'evaluate' command word, leading to a sophisticated and well-reasoned conclusion.

#### Level 3 (11–15 marks) - Clear and sound:
- **AO1**: Shows good knowledge and understanding of global governance frameworks, institutions, and challenges.
- **AO2**: Applies knowledge to construct a logical, analytical response. Evaluates the statement with clear arguments, though the discussion may focus more on descriptions of case studies with slightly less balanced evaluation.
- **Characteristics**: A clear structure is maintained; includes appropriate geographic terminology and relevant examples.

#### Level 2 (6–10 marks) - Moderate and descriptive:
- **AO1**: Demonstrates basic knowledge of global governance, the role of international agreements, or global commons.
- **AO2**: Imparts basic analysis with some attempt to evaluate, but arguments may be superficial, unbalanced, or heavily descriptive rather than analytical. Some assertions lack supporting evidence.
- **Characteristics**: The essay may be structured but lacks deep conceptual links between sovereignty, national interest, and global systems.

#### Level 1 (1–5 marks) - Lacking depth and structure:
- **AO1**: Shows isolated, fragmented, or generalized knowledge of global governance with significant errors or gaps.
- **AO2**: No real attempt to evaluate or address the prompt directly. Focuses on general descriptions with little geographical focus.
- **Characteristics**: Poorly structured, lacking geographic terms and coherent arguments.

部分 E: 必答 Changing Places

Answer all questions in Changing Places.

5 題目 · 42 分

題目 1 · Structured Outline

4 分

Outline how corporate bodies can influence the representation of a place.

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解題

Corporate bodies, including local authorities, tourism boards, and private business developers, actively shape how places are perceived by external audiences.

- **Targeted Rebranding and Marketing:** They create specific identities for places using logos, slogans, and promotional websites. For instance, tourism boards design campaigns to highlight scenic beauty or cultural heritage to attract visitors.
- **Physical and Semantic Regeneration:** Property developers often rename areas or build high-end residential and commercial spaces (e.g., rebranding former industrial docks as 'marinas' or 'waterfront developments') to project an affluent, modern image that appeals to high-income residents and businesses.
- **Manipulation of Perception:** To attract inward investment, corporate representations tend to be highly selective. They focus heavily on positive aspects like safety, economic dynamism, and leisure opportunities, whilst deliberately glossing over social issues such as poverty, homelessness, or industrial decline.

評分準則

Award 1 mark for each valid, developed point showing how corporate bodies influence place representation, up to a maximum of 4 marks.

- **Point 1 (1 mark):** Identifies a corporate body (e.g., tourist boards, property developers, local councils) and their core motive (e.g., to attract investment, tourism, or residents by projecting a positive image).
- **Point 2 (1 mark):** Explains a specific mechanism used to influence representation, such as place marketing, rebranding, slogans, or logo design (e.g., 'People Make Glasgow').
- **Point 3 (1 mark):** Explains how physical/spatial manipulation is used to alter representation, such as developers renaming rundown areas or designing modern, gentrified spaces to project luxury.
- **Point 4 (1 mark):** Notes that corporate representation is highly selective or 'staged', often ignoring negative socio-economic realities (e.g., poverty, crime) to present an idealised version of the place.

題目 2 · Plot & Analyse

6 分

### Figure 1: Bipolar Questionnaire Scores for an Urban Regeneration Area

| Place Criterion | Long-term residents (insiders) Mean Score | New residents (outsiders) Mean Score |
| :--- | :---: | :---: |
| Aesthetic Appeal | -1.5 | +2.0 |
| Community Spirit | +2.5 | -0.5 |
| Safety/Security | -1.0 | +1.5 |

*Note: Scores range from -3 (very negative) to +3 (very positive).*

**Part (a)**
Identify which resident group holds a more positive view of the area's physical aesthetic appeal, and calculate the exact difference in mean scores between the two groups for this criterion. (2 marks)

**Part (b)**
Analyse the differences in place meaning and lived experience between the long-term and new residents as shown in Figure 1. Refer to insider and outsider perspectives in your answer. (4 marks)

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解題

### Part (a)
* **Identification:** New residents (outsiders) hold a more positive view (+2.0 compared to -1.5 for long-term residents).
* **Calculation:** The difference is \( 2.0 - (-1.5) = 3.5 \) scale points.

### Part (b)
* **Analysis of Long-Term Residents (Insiders):** Despite rating the physical environment poorly (aesthetic appeal of -1.5 and safety of -1.0), long-term residents show a very strong sense of community spirit (+2.5). This demonstrates that their sense of place is deeply rooted in social networks, shared history, and lived experience, which are classic characteristics of an 'insider' perspective. Physical decay or security concerns do not erode their strong emotional attachment.
* **Analysis of New Residents (Outsiders):** In contrast, new residents view the regenerated physical environment highly positively (aesthetic appeal +2.0, safety +1.5), but experience a lack of community connection (community spirit of -0.5). This aligns with an 'outsider' perspective, where appreciation of a place is initially superficial and based on external physical/visual representations rather than established social bonds. Over time, gentrification and physical regeneration can lead to conflicting place meanings and social exclusion between these two demographic groups.

評分準則

### Part (a) Marking Guidance (2 marks)
* **1 mark** for correctly identifying 'New residents' (or 'outsiders').
* **1 mark** for the correct calculation: **3.5** (also accept -3.5 or '3.5 points').

### Part (b) Marking Guidance (4 marks)

* **Level 2 (3–4 marks):**
* Demonstrates clear application of geographical knowledge of insider and outsider concepts to explain the data.
* Well-developed analysis that contrasts the social attachment of long-term residents (high community spirit despite low aesthetic score) with the physical-focused appreciation of new residents.
* Integrates specific data from Figure 1 to support points.

* **Level 1 (1–2 marks):**
* Simple description of data points with limited geographical interpretation.
* May describe the scores for each group separately without contrasting them or connecting them to insider/outsider concepts.
* Lacks specific data support or conceptual depth.

題目 3 · structured

6 分

Figure 1 shows extracts from an online community forum discussing recent changes in Portside Mills, a regenerated dockland area. User 'Local_Since_1985' writes: 'The new Canal-side Tech Hub has brought in trendy cafes and young professionals commuting into the city centre. But the old ironworks heritage is being completely erased. They replaced the historic crane with a modern steel sculpture that means absolutely nothing to those of us who grew up here. It feels like we are living in a giant corridor for commuters, not a community.' User 'TechPioneer_99' writes: 'This place is vibrant now! The superfast broadband and direct rail links to London have put us on the map. We have gone from an isolated, decaying industrial wasteland to a globally connected hotspot in under five years.' Analyse the qualitative sources in Figure 1 to examine how external connections and shifting demographic flows can shape different representations of place.

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解題

The stimulus highlights how the same physical space can be represented in starkly contrasting ways based on different lived experiences and connections. Firstly, the introduction of external connections (such as direct rail links to London and superfast broadband) has enabled Portside Mills to integrate into a wider globalised economic network. For newcomers (represented by TechPioneer_99), this shifts the representation of the place from an 'isolated, decaying industrial wasteland' to a 'globally connected hotspot', illustrating an optimistic, economic-driven construction of place. Secondly, shifting demographic flows (the influx of young professionals and commuters) create a sense of social displacement for long-term residents. For Local_Since_1985, these changes lead to a representation of the area as a 'giant corridor for commuters' rather than an authentic, cohesive 'community'. The loss of physical heritage (the replacement of the historic crane with a modern sculpture) demonstrates how external forces of regeneration can sanitise or homogenise space, leading to a loss of attachment for 'insiders' who value the place's industrial history, while 'outsiders' or newcomers view the modern infrastructure as a sign of progress. In conclusion, representations of place are highly subjective and contested, heavily influenced by whether an individual benefits from or is marginalised by external flows of capital and people.

評分準則

Level 3 (5-6 marks): Demonstrates detailed and purposeful analysis of the stimulus. Successfully applies geographical concepts of place (such as insider/outsider perspectives, lived experience, sense of place, and contested representations) to explain the contrasting views. Explains clearly how both demographic shifts and external connections drive these differences. Level 2 (3-4 marks): Shows some analysis of the stimulus. Explains the two viewpoints but may be more descriptive, with less explicit link to geographical theories of place representation and connections. Level 1 (1-2 marks): Basic, superficial use of the source. Simply paraphrases or extracts points from the text with little or no geographical analysis. Accept: references to gentrification, globalisation, placelessness, or locale. Reject: answers that do not use the stimulus.

題目 4 · structured

6 分

Analyse how qualitative sources can be used to understand the lived experience of place.

題目 5 · essay

20 分

With reference to your local and distant place studies, evaluate the view that the character and identity of places are shaped more by the actions of external forces (such as corporate bodies and government agencies) than by local communities.

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解題

### Indicative Content

**AO1 (10 Marks) - Knowledge and Understanding:**
- Knowledge of the concept of 'place character' and 'place identity' and how they are shaped by endogenous (internal) and exogenous (external) factors.
- Understanding of the roles of various external forces: corporate bodies (e.g., transnational corporations, property developers), government agencies (e.g., national/local planning authorities, regeneration bodies), and international organizations.
- Understanding of the roles of local communities: community groups, non-governmental organizations, resident associations, and local activists.
- Detailed knowledge of the chosen local place study and distant place study, specifically regarding their history, economic shifts, demography, and recent changes.

**AO2 (10 Marks) - Application of Knowledge (Analysis and Evaluation):**
- Evaluation of the extent to which external forces impose changes on a place (e.g., top-down regeneration, global retail chains homogenizing high streets - 'clone town' effect, industrial restructuring causing deindustrialization).
- Analysis of how local communities resist, adapt to, or drive change (e.g., bottom-up community-led regeneration projects, local protests against development, creation of community land trusts or local currencies).
- Contrast of the local place and the distant place. For instance, a distant place like Stratford (East London) may have been heavily transformed by top-down external forces (e.g., the Olympic Delivery Authority, Westfield), whereas a local place (e.g., a rural village or small market town) might retain a character heavily preserved or shaped by local community actions, or vice versa.
- Synthesis of the dynamic relationship between these forces. Students may argue that while external forces control financial capital and policy, local communities shape the lived experience, informal representations, and daily realities that define a place's authentic identity.

### Illustrative Example Structure:
1. **Introduction:** Define key terms (external forces, local communities, place identity). Outline the thesis: e.g., while external forces hold the financial and legislative power to structurally alter place character, the organic, lived identity of a place is fundamentally negotiated and sustained by local communities.
2. **Body Paragraph 1 (Distant Place - e.g., Stratford, East London):** Discuss how massive external investment (London Olympic Legacy, national government, multinational developers) radically changed the built environment, demography, and economic profile. Evaluate whether this top-down shift erased local identity or if local groups managed to preserve pockets of community character.
3. **Body Paragraph 2 (Local Place - e.g., Totnes, Devon):** Analyze how local community action (e.g., Transition Town movement, successful protest against Costa Coffee, local currency) actively defended and shaped the town's identity against corporate, external forces.
4. **Body Paragraph 3 (Synthesis / Counter-perspective):** Explore how the two forces do not exist in isolation. External funding often requires local community partnership, and local communities are themselves shaped by global flows of ideas and people.
5. **Conclusion:** Provide a clear, nuanced judgment. The structural, economic character is often dictated by external forces, but the social, subjective identity of a place is ultimately determined by the resilience and agency of its local community.

評分準則

### Marking Rubric (AQA 20-Mark Essay Framework)

**Level 4 (16–20 marks):**
- **AO1:** Demonstrates comprehensive, highly accurate, and detailed knowledge of the forces shaping place character, with precise, well-integrated evidence from both the local and distant place studies.
- **AO2:** Offers a sophisticated, balanced, and critical evaluation of the statement. Highly analytical, drawing clear and nuanced conclusions about the relative power of external vs. local forces.
- **Communication:** Exceptionally well-structured, logical flow, using precise geographical terminology.

**Level 3 (11–15 marks):**
- **AO1:** Shows good, mostly accurate knowledge of endogenous/exogenous factors and place studies, though one place study may be slightly stronger than the other.
- **AO2:** Provides a clear evaluation with some analytical depth. Makes a clear attempt to weigh external forces against local communities, though some arguments may be more descriptive than analytical.
- **Communication:** Well-structured with clear expression, though minor lapses in technical terminology may occur.

**Level 2 (6–10 marks):**
- **AO1:** Demonstrates generalized knowledge of place concepts. Case study details for the local and/or distant place are present but superficial or lack specific factual support.
- **AO2:** Evaluation is present but weak, unbalanced, or largely descriptive of the changes rather than assessing the *influence* of the actors involved.
- **Communication:** Structured, but may contain repetitive points or lack cohesive flow.

**Level 1 (1–5 marks):**
- **AO1:** Shows fragmented, basic knowledge of place characteristics. Case studies are either absent, extremely brief, or irrelevant.
- **AO2:** Lacks meaningful evaluation. May make unsupported assertions or simply list facts without addressing the prompt.
- **Communication:** Poorly structured, difficult to follow, with limited geographical vocabulary.

部分 F: 選答 Human Environment

Answer one optional question (Urban, Population, or Resources).

6 題目 · 54 分

題目 1 · Structured Outline

4 分

Outline the environmental problems associated with the landfilling of municipal solid waste.

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解題

Landfilling municipal solid waste leads to several significant environmental issues: 1. Leachate Contamination: As rainwater percolates through the landfill, it dissolves toxic chemicals, heavy metals, and organic compounds from the waste, creating a highly toxic liquid known as leachate. If the landfill lacks an effective impermeable liner, this leachate can seep into the surrounding soil and contaminate local aquifers, degrading freshwater ecosystems and harming biodiversity. 2. Greenhouse Gas Emissions: The decomposition of organic materials under anaerobic (oxygen-depleted) conditions within a landfill produces landfill gas. This is primarily composed of methane (\(CH_4\)) and carbon dioxide (\(CO_2\)). Methane is a potent greenhouse gas that is highly effective at trapping infrared radiation, thereby contributing directly to the enhanced greenhouse effect and climate change.

評分準則

Marking instructions: Award 1 mark for each valid environmental problem identified (up to 2), and an additional 1 mark for each developed explanation of how that problem impacts the environment (up to 2). Max 4 marks.

Suggested points:
- Leachate generation (1 mark) leading to toxification of nearby soil and groundwater bodies (1 mark).
- Anaerobic decay releasing greenhouse gases like methane (1 mark) which exacerbates global warming and climate change (1 mark).
- Surface wind blowing loose litter into neighboring environments (1 mark) causing physical ingestion hazards for wildlife (1 mark).
- Land clearance for landfill footprint (1 mark) resulting in habitat destruction and fragmentation (1 mark).

Accept: Any other valid environmental impacts (e.g., soil acidification, pest infestation ecological disruption).
Reject: Purely social or economic issues (e.g., land devaluation, local opposition/NIMBYism, cost of construction) unless explicitly linked back to an ecological or environmental system.

題目 2 · Data Analysis

6 分

Table 1 shows municipal solid waste (MSW) generation and disposal methods across four contrasting cities in 2022.

| City and Economic Status | Total MSW Generated (million tonnes / year) | Open Dumping (%) | Sanitary Landfill (%) | Recycling & Composting (%) | Incineration with Energy Recovery (%) |
| :--- | :---: | :---: | :---: | :---: | :---: |
| **City A** (Low-income) | 1.2 | 75 | 15 | 8 | 2 |
| **City B** (Lower-middle) | 4.5 | 40 | 35 | 15 | 10 |
| **City C** (Upper-middle) | 8.1 | 10 | 50 | 25 | 15 |
| **City D** (High-income) | 12.4 | 0 | 12 | 48 | 40 |

Analyse the data shown in Table 1.

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解題

The data shows a clear and strong relationship between a city's economic status, the volume of waste it generates, and the sustainability of its waste disposal methods:

1. **Waste Generation and Wealth Correlation:** There is a direct positive correlation between economic development and municipal solid waste (MSW) generation. The lowest-income city (City A) generates the least waste at 1.2 million tonnes/year, whereas the high-income city (City D) generates over ten times more waste (12.4 million tonnes/year).

2. **Decline of Unsustainable Disposal Methods:** Open dumping shows a stark negative correlation with economic status. It is the dominant method in low-income City A at 75% but falls sharply to 40% in City B, 10% in City C, and is completely phased out (0%) in high-income City D.

3. **Sanitary Landfill Peak in Middle-Income Cities:** Sanitary landfilling is not linear; it starts low in City A (15%), peaks in upper-middle City C (50%), and then drops significantly in high-income City D (12%). This suggests it acts as an intermediate, affordable upgrade from open dumping before cities transition to advanced resource recovery.

4. **Growth of Resource Recovery and Circular Methods:** High-technology and sustainable waste methods show a strong positive correlation with wealth:
- **Recycling and Composting** increase progressively from 8% in City A to 48% in City D.
- **Incineration with Energy Recovery** is minimal in low-income settings (only 2% in City A) but becomes a primary method in high-income settings, accounting for 40% in City D.
- Collectively, City D processes 88% of its waste through recovery-focused pathways (recycling/composting and energy recovery) compared to just 10% in City A.

評分準則

**Mark Scheme (6 marks total):**

- **Level 2 (4–6 Marks):**
- Clear, structured analysis of the trends and relationships in the data.
- Identifies overall correlations between income levels, waste quantity, and disposal preferences.
- Supports points with accurate data extracted from the table (e.g., comparing City A and City D figures).
- Synthesises findings (e.g., noting that while City D produces the most waste, it uses the most sustainable disposal routes, or identifying the non-linear trend of sanitary landfills).

- **Level 1 (1–3 Marks):**
- Simple, descriptive points.
- May list data from individual rows or columns without identifying broader patterns or links (e.g., 'City A has 75% open dumping').
- Limited or no synthesis across the different variables.

**Key features of the data to look for:**
- Contrast in waste generation (1.2M tonnes in City A vs 12.4M tonnes in City D).
- Systematic decline in open dumping as wealth increases.
- Non-linear trend in sanitary landfills peaking in upper-middle status.
- Progressive increase in recycling/composting and incineration with energy recovery with economic status.

題目 3 · Data Analysis

6 分

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解題

評分準則

題目 4 · essay

9 分

Assess the extent to which sustainable transport strategies can successfully reduce the environmental footprint of cities in contrasting levels of development.

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解題

### Detailed Indicative Content:

* **AO1**: Knowledge and understanding of the concept of sustainable urban development, environmental footprints of cities, and specific sustainable transport strategies (e.g., integrated public transport networks, congestion charging, cycle superhighways, bus rapid transit).
* **AO2**: Application of knowledge and understanding to assess how successfully these strategies reduce the environmental footprint (e.g., carbon emissions, air pollution, resource consumption) in contrasting urban areas (HICs vs LICs/NEEs).

### Case Studies & Synthesis:
* **HIC City (e.g., London or Copenhagen)**: Strategies like London's Ultra Low Emission Zone (ULEZ) and cycle superhighways have successfully reduced nitrogen dioxide levels and promoted active travel. However, challenges include the displacement of older vehicles to suburban fringes, high implementation costs, and political resistance.
* **LIC/NEE City (e.g., Curitiba or Bogota)**: Curitiba’s Bus Rapid Transit (BRT) system is a pioneer in cost-effective sustainable transport, significantly reducing car usage and fuel consumption. Bogota's TransMilenio and Ciclova initiatives also show success, though rapid population growth, spatial expansion, and overcrowding present ongoing challenges to sustainability.

### Evaluation/Conclusion:
Candidates should conclude that while the technical feasibility of reducing environmental footprints via sustainable transport is high, the overall 'success' depends heavily on local governance, financial investment capacity, and the rate of urban growth.

評分準則

### Marking Scheme (9 Marks)

**Level 3 (7–9 marks)**:
* Demonstrates detailed, accurate, and coherent geographical knowledge and understanding of sustainable transport strategies and environmental footprints (AO1).
* Applies knowledge and understanding to offer a balanced, well-supported, and logical assessment of the extent to which these strategies are successful in contrasting settings (AO2).
* Written in a highly appropriate geographical style with clear structure.

**Level 2 (4–6 marks)**:
* Demonstrates reasonable knowledge and understanding of sustainable transport strategies, though description may dominate over explanation (AO1).
* Shows some ability to apply knowledge to assess effectiveness, but arguments may be unbalanced or lack specific detail/contrasting examples (AO2).
* Structure and terminology are mostly appropriate but may contain minor inaccuracies.

**Level 1 (1–3 marks)**:
* Demonstrates limited or fragmented knowledge of urban sustainability or transport (AO1).
* Offers little or no assessment of success; observations are descriptive, generalized, or highly unstructured (AO2).

**Awarding Marks within Levels**:
* *Lower end of Level*: Key elements of criteria are met but lack depth, precision, or support from case study detail.
* *Upper end of Level*: Criteria are fully met with comprehensive detail, clear comparative analysis of contrasting urban areas, and a logical, reflective conclusion.

題目 5 · essay

9 分

Assess the effectiveness of international agreements and treaties in managing conflict over transboundary water resources.

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解題

### Detailed Indicative Content:

* **AO1**: Knowledge and understanding of the causes of transboundary water conflicts (upstream vs downstream users, dam construction, population growth, climate change) and the mechanisms of international water agreements or treaties (e.g., Helsinki Rules, UN Watercourses Convention, specific basin treaties).
* **AO2**: Application of knowledge and understanding to assess how effective these agreements are at preventing conflict, ensuring equitable distribution, and adapting to changing climate conditions.

### Key Examples & Analysis:
* **The Indus Water Treaty (1960)**: Often cited as a highly successful treaty between India and Pakistan, surviving multiple wars. It clearly allocated rivers, but faces modern challenges from climate change (glacier melt) and growing agricultural demands which strain the treaty's original framework.
* **The Nile River Basin**: Upstream countries like Ethiopia (with the Grand Ethiopian Renaissance Dam - GERD) challenge historic colonial-era treaties (1929 and 1959) that favored downstream Egypt and Sudan. The Nile Basin Initiative (NBI) has struggled to secure a comprehensive, legally binding agreement accepted by all parties, showcasing the limits of voluntary cooperation when national sovereignty and survival are at stake.

### Evaluation/Conclusion:
Candidates should recognize that while treaties provide crucial legal frameworks and dialogue channels, their effectiveness is often limited by shifting power dynamics, lack of enforcement mechanisms, and their rigidity in the face of climate-induced changes in water availability.

評分準則

### Marking Scheme (9 Marks)

**Level 3 (7–9 marks)**:
* Demonstrates comprehensive and precise knowledge of transboundary water sources, conflict drivers, and specific treaties/agreements (AO1).
* Applies knowledge to deliver a mature, balanced, and evidence-supported assessment of the strengths and limitations of these treaties in resolving conflicts (AO2).
* Consistently uses appropriate geographical terms and maintains a clear, logical structure.

**Level 2 (4–6 marks)**:
* Shows generalized or partially detailed knowledge of water conflict and international agreements (AO1).
* Attempts to assess the effectiveness of treaties, but the argument may be one-sided, lack specific detail, or focus heavily on description rather than evaluation (AO2).
* Writing is structured but may lack geographical precision in places.

**Level 1 (1–3 marks)**:
* Displays isolated or superficial knowledge of water security or conflict (AO1).
* Offers little or no assessment of agreements; responses are highly generalized, descriptive, or unstructured (AO2).

**Awarding Marks within Levels**:
* *Lower end of Level*: Basic requirements of the level are met but with limited range or depth of examples.
* *Upper end of Level*: Well-developed arguments, using at least one detailed transboundary case study, culminating in a clear, justified conclusion.

題目 6 · Extended Essay

20 分

Evaluate the view that sustainable transport strategies are the most crucial element in achieving overall urban sustainability.

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解題

### Indicative Content

**Introduction**
- Define urban sustainability as meeting the needs of the present without compromising the ability of future generations to meet their own needs. It consists of three dimensions: environmental (reducing ecological footprint, climate action), social (equity, cohesion, health), and economic (green jobs, efficiency).
- Outline the thesis: While sustainable transport is a vital catalyst that connects all three dimensions of sustainability, it cannot achieve overall urban sustainability in isolation. It must be integrated with holistic waste management, energy efficiency, green space, and socio-economic policies.

**Arguments for sustainable transport being the most crucial element**
- **Environmental impact:** Transport is one of the largest contributors to urban carbon emissions and local air pollution (NOx, PM2.5). Solutions like Copenhagen’s cycling infrastructure or Curitiba's Bus Rapid Transit (BRT) directly cut emissions, improve urban air quality, and mitigate the urban heat island effect.
- **Economic vitality:** Gridlock and congestion cost cities billions in lost productivity. Efficient transport networks ensure fluid movement of goods, services, and labor.
- **Social equity:** Affordable, accessible transit (such as Medellin’s Metrocable) integrates marginalized, low-income peripheral communities with central economic opportunities, thereby directly reducing socio-economic spatial segregation.

**Arguments that other strategies are equally or more crucial**
- **Waste management and circular economy:** Solid waste is a massive urban hazard. Without systems like Freiburg's 'zero waste' goals or Copenhagen's waste-to-energy plants (Copenhill), cities would succumb to pollution, landfill overflow, and high resource depletion, regardless of how green their transport is.
- **Sustainable buildings and energy (the built environment):** Buildings generate nearly 40% of global annual greenhouse gas emissions. Retrofitting housing stock and enforcing passivhaus standards (e.g., BedZED in London) are arguably more fundamental to carbon neutrality than transport alone.
- **Green infrastructure and Sustainable Urban Drainage Systems (SuDS):** In an era of climate change, managing flood risk through permeable pavements, rain gardens, and bioswales (e.g., Sponge Cities in China) is vital for physical survival and resilience against natural hazards.
- **Socio-economic policies:** True sustainability requires affordable housing, healthcare, and employment. Green-gentrification can occur if transit-oriented developments price out the original community, undermining the social pillar of sustainability.

**Conclusion**
- Conclude by stating that transport is a highly visible and impactful facilitator of sustainability, but it is not a silver bullet. Overall urban sustainability is systemic; a city with zero-emission buses but high social inequality, poor waste processing, and vulnerability to flooding cannot be deemed sustainable. Therefore, an integrated, multi-sector master plan is the most crucial element rather than any single strategy in isolation.

評分準則

**Level 4 (16-20 marks):**
- Demonstrates detailed, thorough, and highly accurate geographical knowledge and understanding of urban sustainability concepts and diverse strategies.
- Offers a balanced, sophisticated evaluation of transport versus other urban sustainability strategies (waste, energy, water, social policy).
- Utilizes well-chosen, precise case studies (e.g., Curitiba, Freiburg, Copenhagen, Medellin) to back up assertions.
- Communicates a clear, logical, and sustained argument leading to a well-justified conclusion.

**Level 3 (11-15 marks):**
- Shows good knowledge and understanding of urban sustainability, though some aspects may lack depth or precision.
- Evaluates the role of transport, but the comparison with other strategies may be somewhat unbalanced.
- Uses appropriate examples, though they may be described rather than critically analysed.
- Argument is structured and generally clear, ending with an appropriate conclusion.

**Level 2 (6-10 marks):**
- Demonstrates basic or generalized knowledge of sustainable cities, possibly relying on vague descriptions of green schemes.
- Evaluation is weak, with limited attempt to weigh transport against other factors.
- Examples are limited in number, purely descriptive, or contain inaccuracies.
- Structure is basic; arguments may be repetitive or lack a clear flow.

**Level 1 (1-5 marks):**
- Shows isolated or very limited geographical knowledge of urban environments; lacks understanding of sustainability.
- No real evaluation or analytical structure.
- Lacks relevant case studies or examples.
- Writing may be fragmented or difficult to follow.

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