Question detail
What is sewage?
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. Waste water that contains organic matter and harmful microbes
- B. Water that is chemically pure
- C. Water that is safe to drink
- D. Water that has been distilled
Answer
The correct option is Waste water that contains organic matter and harmful microbes. 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 Waste water that contains organic matter and harmful microbes. Waste water that contains organic matter and harmful microbes 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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