Question

Eutrophication is caused due to :-
a) virus
b) fungi
c) protozoa
d) algae

Answer 1

Answer:

Eutrophication is typically the result of human activities that contribute excess amounts of nitrogen and phosphorus into water. Agricultural fertilizers are one of the main human causes of eutrophication. Fertilizers, used in farming to make soil more fertile, contain nitrogen and phosphorus.

Answer 2

Answer:algae

Explanation:algae forms a layer over the surface of water thus blocking the sunlight to enter the water, as a result aquatic plants die this lead to depletion of oxygen in water as a result of which the aquatic animals like fishes would also die. This phenomenon is given the name as eutrophication.