Question

What is sewage? Explain why it is harmful to discharge untreated sewage into rivers
or seas.

Answer 1

Answer:

I don't know sorry sorry

Answer 2

Answer:

Sewage contains various contaminants including disease-causing bacteria and other microbes. If untreated sewage is discharged into rivers or seas, then the water in the rivers or seas would also get contaminated.

Explanation:

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