Which of the following is a cause of
eutrophication of a lake?
a. excess nutrients promote the growth
b. floodwater deposits a large amount of
c. water begins to collect in a low-lying
d. a high rate of evaporation causes salt
of algae.
sediment.
basin.
accumulation.

Answer is A. Excess nutrients promote the growth

Explanation:

Eutrophication is a process in where there is an excess of salts and nutrients (mainly Nitrogen) in a body of water like a river or a lake. The algae growth is heavily increased because these organisms take advantage of the excess of nitrogen and spread around the body of water and in some cases fill the entire surface with organisms. The main consequence of this process is the loss of oxygen in the water.