2023 CCEA A-Level Nutrition and Food Science 3310 模擬試題連答案詳解

Global food security faces three principal, interlinked challenges. Climate change and severe weather increasingly disrupt agricultural production: rising average temperatures, more frequent droughts and floods, and unpredictable rainfall patterns damage crop yields and livestock productivity in both developed and developing regions, with the poorest food-producing regions, which often have the least capacity to adapt, typically most severely affected. Land degradation, driven substantially by intensive farming practices such as monocropping, overgrazing and heavy chemical fertiliser and pesticide use, progressively reduces soil fertility, increases erosion and depletes water resources, undermining the long-term productive capacity of agricultural land precisely when demand for it is rising. Population growth compounds both problems: the global population continues to grow substantially, increasing overall demand for food, water and agricultural land at a pace that sustainable production methods struggle to match, while economic development in many regions simultaneously increases demand for more resource-intensive foods such as meat and dairy. Together, these three challenges mean that achieving food security — reliable access for all people to sufficient, safe and nutritious food — requires addressing environmental sustainability and production capacity simultaneously, rather than treating increased output alone as a sufficient solution.

Level-of-response marking (10 marks). Band 1 (0-2): Basic knowledge, limited application, basic QWC — perhaps one challenge named with little development. Band 2 (3-5): Adequate knowledge and application, adequate QWC — two challenges outlined with some accuracy but limited development. Band 3 (6-8): Competent knowledge and application, competent QWC — all three challenges (climate change/severe weather, land degradation, population growth) outlined with reasonable accuracy and some development. Band 4 (9-10): Highly competent knowledge, accurate application, highly competent QWC — all three challenges outlined clearly, accurately and with good development, showing understanding of how they interact. All other valid points will be given credit. Max 10 marks.

Food poverty — the inability of individuals or households to reliably afford or access sufficient, nutritious food — has become a significant local and national issue in the UK, and several organisations work to address it directly.

Food banks operate at a local level across the UK, providing emergency food parcels, usually of non-perishable items, to individuals and families experiencing a short-term financial crisis, typically following referral from agencies such as social workers, GPs or Citizens Advice. They provide an immediate, practical response to acute food poverty, though critics note they address symptoms rather than root causes such as low income or delays in benefit payments.

FareShare is a UK charity that redistributes surplus food that would otherwise go to waste from food manufacturers, retailers and the wider food industry to frontline charities and community groups, which then use it to prepare meals or distribute it directly to people experiencing food poverty. FareShare's model addresses food poverty and food waste simultaneously, converting food that would be discarded into a resource for people in need.

The Trussell Trust is the UK's largest food bank network, supporting a large number of affiliated food banks across the country with a standardised model of operation, training and supply coordination, ensuring more consistent provision and quality across different regions. Beyond direct food provision, the Trussell Trust also conducts research into the scale and causes of UK food poverty and campaigns for longer-term policy changes — such as reform of the welfare system — aimed at reducing the underlying need for emergency food aid in the first place, rather than treating food banks as a permanent solution.

Together, these organisations represent a mixed response combining immediate emergency relief (food banks), efficient redistribution of existing food resources (FareShare), and coordinated, evidence-based advocacy for longer-term change (the Trussell Trust), reflecting both the scale of food poverty as a current UK issue and the recognition that emergency food aid alone cannot resolve its underlying economic causes.

Level-of-response marking (15 marks). Band 1 (0-3): Basic knowledge, limited application, basic QWC — one organisation or measure named with little development. Band 2 (4-7): Adequate knowledge and application, adequate QWC — two organisations described with some accuracy. Band 3 (8-11): Competent knowledge and application, competent QWC — food banks, FareShare and the Trussell Trust all described with reasonable accuracy and some development. Band 4 (12-15): Highly competent knowledge, accurate application, highly competent QWC — all three described clearly, accurately and with good development, showing understanding of their distinct roles and of the difference between emergency relief and longer-term solutions. All other valid points will be given credit. Max 15 marks.

Animal farming and organic farming both have significant, though contrasting, impacts on climate change and natural resources, while locally and seasonally produced food offers real, though not unlimited, economic benefits.

Animal farming is a major contributor to environmental pressure. Livestock, particularly cattle and sheep, produce methane through enteric fermentation, a greenhouse gas considerably more potent than carbon dioxide over the short term, making animal farming a significant contributor to overall agricultural greenhouse gas emissions. Animal farming also places substantial demands on natural resources: it requires large volumes of water, both for animals directly and for growing feed crops, and often requires more land per unit of nutritional output than plant-based production, contributing in some regions to land conversion (including deforestation) to create pasture or grow feed crops, further reducing carbon storage capacity and biodiversity.

Organic farming presents a more mixed picture. By avoiding synthetic fertilisers and pesticides, organic methods reduce chemical run-off into water systems and can support greater on-farm biodiversity and soil health over time, representing a genuine environmental benefit. However, organic methods often produce lower yields per hectare than conventional intensive farming, meaning organic production can require more agricultural land to produce the same quantity of food, which in turn places its own pressure on natural resources and land availability, particularly relevant given the land degradation and population growth pressures already facing global food security. The overall environmental impact of organic farming therefore depends on weighing reduced chemical pollution against potentially greater land use.

Locally and seasonally produced food contributes positively to local economies in several ways. Money spent on locally grown produce tends to circulate within the local economy for longer, supporting local farmers' incomes, local employment and related local businesses, rather than being spent on food transported long distances from producers with no direct connection to the local community. Seasonal food, grown without the additional costs of extended storage or artificial ripening, can also be more affordable and supports farmers' ability to plan production around natural growing conditions rather than year-round demand for imported alternatives. In producer countries, similar economic benefits are secured for farmers through Fairtrade arrangements, which guarantee producers a minimum, more stable price for their goods regardless of volatile global commodity prices, along with an additional Fairtrade premium invested in community projects such as schools, healthcare or infrastructure — helping ensure that a fairer share of the value of food production remains with the farmers and communities who grow it, rather than being captured disproportionately by intermediaries further along the supply chain.

Level-of-response marking (20 marks). Band 1 (0-5): Basic knowledge, limited application, basic QWC. Band 2 (6-10): Adequate knowledge and application of both environmental and economic aspects, adequate QWC. Band 3 (11-15): Competent knowledge and application, discussing both animal and organic farming's environmental impact and explaining local/seasonal food and Fairtrade's economic contribution with reasonable accuracy; competent QWC. Band 4 (16-20): Highly competent knowledge, accurate and well-developed application covering both environmental factors and both UK and producer-country economic contributions, highly competent QWC. All other valid points will be given credit. Max 20 marks.

Food and associated packaging waste arises at every stage of the food chain, with each stage contributing in distinct ways. Primary producers contribute to waste when crops are rejected before ever leaving the farm, often for purely cosmetic reasons — misshapen or blemished fruit and vegetables that are perfectly edible but fail to meet retailers' appearance specifications, along with crop surplus that exceeds contracted volumes and has no buyer. Food manufacturers contribute through processing losses (trimmings, off-cuts and by-products not fully utilised), production overruns, and packaging waste generated during manufacturing and quality control. Retailers contribute through strict cosmetic and sell-by specifications passed back down the supply chain, over-ordering to ensure shelves always appear fully stocked, and promotional strategies (such as multi-buy offers) that can encourage consumers to purchase more than they need. Consumers contribute substantially at the household stage, through over-purchasing, poor meal planning, confusion between 'use by' and 'best before' date labelling leading to premature disposal of still-safe food, and improper storage that causes food to spoil before it can be used.

WRAP UK (the Waste and Resources Action Programme) works across the supply chain to reduce this waste, engaging with food businesses, retailers and manufacturers through voluntary agreements and initiatives such as the Courtauld Commitment, which brings together major UK retailers, manufacturers and other stakeholders to set shared targets for reducing food and packaging waste across the whole supply chain, improving packaging design and standardising date labelling practices to help both businesses and consumers reduce unnecessary waste. Love Food Hate Waste NI, delivered as part of the wider UK-wide Love Food Hate Waste campaign, focuses specifically on practical, household-level behaviour change, providing consumers with accessible advice on meal planning, portion sizing, correct food storage, understanding date labels, and creative ways to use leftovers, aiming to reduce the substantial proportion of total food waste that occurs in the home rather than earlier in the supply chain.

Level-of-response marking (20 marks). Band 1 (0-5): Basic knowledge, limited application, basic QWC. Band 2 (6-10): Adequate knowledge and application, covering some contributors and/or organisations with limited development; adequate QWC. Band 3 (11-15): Competent knowledge and application, examining most or all contributors (primary producers, manufacturers, retailers, consumers) and describing both WRAP UK and Love Food Hate Waste NI with reasonable accuracy; competent QWC. Band 4 (16-20): Highly competent knowledge, accurate and well-developed application covering all four contributors and both organisations with clear understanding of their distinct roles; highly competent QWC. All other valid points will be given credit. Max 20 marks.

Several significant barriers prevent consumers from consistently making food choices that positively support food security and sustainability. Cost is often the most immediate barrier: sustainably certified, organic, or Fairtrade products frequently carry a price premium compared to conventionally produced alternatives, making them inaccessible to many lower-income households even when consumers are aware of and sympathetic to their environmental or ethical benefits. Availability presents a further barrier, since sustainably produced or locally sourced options are not equally accessible in all areas, particularly for consumers without easy access to farmers' markets, specialist retailers or larger supermarkets stocking a wide range of certified products. A lack of consumer knowledge about the environmental and social impact of different food choices, and confusion over the growing number of sustainability labels and certification schemes, can also prevent informed decision-making, while time pressures on busy households can discourage the more careful meal planning and preparation that sustainable shopping and reduced food waste often require. Finally, established habitual shopping patterns — built around convenience, brand loyalty and price — can be difficult to change even when consumers hold genuinely positive attitudes toward sustainability in the abstract.

Supermarket shopping carries both environmental and social costs that are worth considering directly. Environmentally, the modern supermarket supply chain often depends on importing out-of-season produce over long distances ('food miles'), refrigerated transport and storage that consume significant energy, and packaging designed for durability and shelf appeal that generates considerable plastic and other waste. Socially, the dominant purchasing power of large supermarket chains can place significant downward price pressure on primary producers and smaller-scale farmers, both in the UK and in producer countries, squeezing their incomes and, in some cases, threatening the viability of smaller or more sustainably minded farming operations that cannot compete on price alone; the centralisation of food retail in a small number of large chains can also reduce the diversity of local food economies and disconnect consumers from direct knowledge of where and how their food is produced. At the same time, it should be acknowledged that supermarkets provide many consumers, particularly in urban areas, with convenient, affordable access to a wide range of food, including some sustainably certified options, meaning their overall social and environmental impact is genuinely mixed rather than uniformly negative.

Level-of-response marking (20 marks). Band 1 (0-5): Basic knowledge, limited application, basic QWC. Band 2 (6-10): Adequate knowledge and application, covering some barriers and/or supermarket costs with limited development; adequate QWC. Band 3 (11-15): Competent knowledge and application, discussing several barriers (cost, availability, knowledge, time, habit) and both environmental and social costs of supermarket shopping with reasonable accuracy; competent QWC. Band 4 (16-20): Highly competent knowledge, accurate and well-developed discussion of barriers and of supermarket shopping's environmental and social costs, showing balanced consideration; highly competent QWC. All other valid points will be given credit. Max 20 marks.