問 1
1 点Which of the following is the primary goal of the disinfection stage (e.g., chlorination or UV irradiation) in modern sewage treatment?
Senior Secondary (HKDSE) · Biology
Pollution control：練習問題
その場で採点される選択問題 5 問と、解説つきの記述問題 2 問。すべて「Pollution control」からの出題です。
7 問15 点無料・登録不要
問 2
1 点A persistent organic pollutant is absorbed by a single organism, such as a large predatory fish, and its concentration in the tissues increases over the organism's lifespan. This process, concerning the accumulation within one trophic level, is specifically termed:
問 3
1 点An increased level of degradable organic pollution in a river ecosystem is most accurately indicated by which pair of changes?
問 4
1 点Exposure to high concentrations of fine particulate matter ( \( \text{PM}_{2.5} \)) in polluted air poses a significant health risk. Biologically, the primary concern regarding these particles is that they:
問 5
1 点Which sequence of events correctly explains why severe eutrophication often leads to widespread fish mortality (fish kill) in an aquatic environment?
問 6
5 点How does the integration of biological nitrogen removal in sewage treatment plants utilize the metabolic diversity of bacteria to prevent eutrophication, and why is this stage critical even after organic matter has been decomposed?
まず自分で答えを書いてから、解説と照らし合わせましょう。
問 7
5 点Effective waste management is crucial for environmental sustainability and is often guided by the '3 R's' principle.
(a) Briefly explain the '3 R's' principle (Reduce, Reuse, Recycle) in waste management. For each 'R', provide one specific, distinct example of how it can be applied in daily life.
(b) Discuss one environmental benefit of large-scale recycling of materials (e.g., plastics or metals) compared to their disposal in landfills, considering resource consumption or pollution.
まず自分で答えを書いてから、解説と照らし合わせましょう。
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