A lake with an inflow of domestic sewage rich in organic waste may result in

Options

A. drying of the lake very soon due to algal bloom
B. an increased growth of fishes due to algal bloom
C. death of fish due to lack of oxygen
D. increased population of aquatic food web organisms.

Answer

C

Explanation

The nutrients present in domestic sewage added in lake will cause the dense growth of plants and planktonic algae. The algae uses oxygen and may deoxygenate the water which may lead to death of the fish.