How does the flow of acid rain into a river make the survival of aquatic life in a river difficult ?

Explanation

1) Acid rains are combiN/Ation of carbonic acid, sulphuric acid and nitric acid with rain water.
2) The pH of acid rain is less than 5.6.
3) Living organisms can survive only in a N/Arrow range of pH change.
4) When acid rain with pH value less than 5.6, flows into rivers, it lowers the pH of river water.
5) Due to less pH, the river water becomes acidic and hence the aquatic life in such I . rivers becomes difficult.