Question detail
Why must waste water be treated before it is released into the environment?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using the Earth's resources and obtaining potable water
Question
- A. To remove harmful microbes and organic matter
- B. To increase the temperature of the water
- C. To add nutrients for aquatic life
- D. To change the color of the water
Answer
The correct option is To remove harmful microbes and organic matter. This answer is correct because it matches the approved learning objective to explain why waste water must be treated before it is released into the environment in the subtopic Waste water treatment.
Explanation
The correct option is To remove harmful microbes and organic matter. To remove harmful microbes and organic matter is correct because it directly supports the approved learning objective to explain why waste water must be treated before it is released into the environment. This belongs to the subtopic Waste water treatment within Using the Earth's resources and obtaining potable water, 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 Waste water treatment.
Common mistake
Misunderstanding Waste Water Treatment
Students often think that waste water can be released into the environment without treatment if it looks clean.
Emphasize that waste water must be treated to remove harmful substances and microbes before being released to protect the environment.
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