Question

suggest any three ways to check river pollution​

Answer 1

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If you see dead fish floating on the river or notice that the water is discoloured and smelly any one of the following forms of pollution may be the cause:

fertilisers

industrial waste

oil

warm water

All incidents of river pollution should be reported to the Pollution Control officer at the Water Authority giving as much detail as you can: date, time, exact place and precisely what you saw.

I hope it will helps u...

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Answer 2

1. sewage treatment and prevent mixing with river water.
2. treatment of waste before discharging water.
3. public awareness.

Hope this helps buddy....☺