question_answer

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

Answer:

                  Acid rain water, if mixed with river water, lowers its pH below 5.6, i.e., makes river water acidic. But the living body works normally within a pH range of 7-7.8. That's why flow of acid rain water to river makes the survival of aquatic life in the river difficult.