Question

what happens when we pollute our rivers​

Answer 1

Answer:

In polluted water, there might be too high an amount of oxygen, consuming bacteria that decompose wastes. As a result, the oxygen concentration can then decrease to a threatening level. ... Excessive growth of algae is a frequent cause of oxygen depletion and sudden fish kills. It is harmful for humans, too.

Answer 2

Explanation:

⤵️

sometimes the pollutants enter a food chain and accumulate until they reach toxic levels, eventually killing birds,fishes etc.

hope this helps you mate ✨