Question

why are the river polluted​

Answer 1

Answer:

Dirty water containing chemicals is put back in the river. Water used for cooling is warmer than the river itself, and this is also a form of pollution. People are sometimes careless and throw rubbish such as bottles and crisp packets directly into rivers.  Polluted water also carries diseases.

Explanation:

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Answer 2

Answer:

river are polluted by people indirectly by using chemical soaps, throwing of medical waste and plastic they polluted the river.