Question detail
How does acid rain affect aquatic ecosystems?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Common atmospheric pollutants and their sources
Question
- A. It increases the oxygen levels in water
- B. It decreases the pH of water, harming aquatic life
- C. It provides essential nutrients for fish
- D. It promotes the growth of algae
Answer
The correct option is It decreases the pH of water, harming aquatic life. This answer is correct because it matches the approved learning objective to describe how acid rain can damage plants, aquatic ecosystems and buildings in the subtopic Properties and effects of atmospheric pollutants.
Explanation
The correct option is It decreases the pH of water, harming aquatic life. It decreases the pH of water, harming aquatic life is correct because it directly supports the approved learning objective to describe how acid rain can damage plants, aquatic ecosystems and buildings. This belongs to the subtopic Properties and effects of atmospheric pollutants within Common atmospheric pollutants and their sources, so the explanation must stay tied to that curriculum context. The other options are incorrect because they either do not answer this learning objective, use a vague statement, or move away from Properties and effects of atmospheric pollutants.
Common mistake
Misunderstanding Acid Rain Effects
Students often think that acid rain only affects buildings and does not impact plants or aquatic ecosystems.
Emphasize that acid rain can damage not only buildings but also harm plants by leaching nutrients from the soil and disrupt aquatic ecosystems by altering pH levels.
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