第 1 题
1 分Which of the following is the primary goal of the disinfection stage (e.g., chlorination or UV irradiation) in modern sewage treatment?
高中 (HKDSE) · 生物
污染控制：练习题
5 道选择题即时批改，另有 2 道文字题附完整解题步骤，全部围绕「污染控制」。
7 道题目15 分免费，无需注册
第 2 题
1 分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:
第 3 题
1 分An increased level of degradable organic pollution in a river ecosystem is most accurately indicated by which pair of changes?
第 4 题
1 分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:
第 5 题
1 分Which sequence of events correctly explains why severe eutrophication often leads to widespread fish mortality (fish kill) in an aquatic environment?
第 6 题
5 分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?
先自己写一遍答案，再对照解题步骤。
第 7 题
5 分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.
先自己写一遍答案，再对照解题步骤。
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