Question

Why does uncontrolled growth of algae in a lake cause fish to die?

A.Bacteria that eat dead algae use up all the oxygen in the water.

B.The algae interfere with the fish's ability to reproduce.

C.Predatory fish increase in number and destroy other fish populations.

D.The algae compete for the same food source as the fish.

Answer 1

A

Step-by-step explanation:

bacteria does respiration using dissolved oxygen in water, therefore concentration of dissolved oxygen present in water is reduced making fish unable to perform respiration hence they will die.