Question

At some places, there are many fish in the river, at others there are only a few and at some places there are dead fish. What could be the reason for this? Discuss.

Answer 1

It can be seen that at the beginning of the river, its water is clean. But, as it reaches the village, people start polluting it by throwing garbage into it and bathing their animals in it. As the river reaches the city, the poisonous wastes of industries and the sewage are thrown into it. All these things make the water unfit for the fish and as a result, so many of them die.