Why is it necessary to treat (clean) sewage before releasing it into a river, lake or sea ?
Answers
Answered by
0
Answer:
Sewage water contains harmful substances like acids. So,when sewage is discharged without treated into rivers or lakes,it becomes dangerous for aquatic plants and animals.Therefore, it is necessary to treat (clean) sewage before disposing it off in a water body as it can affect human and aquatic life.
Similar questions