Question

Eutrophication is caused by___

Answer 1

A dense growth of plant life in a aquatic ecosystem which many animals living there die(due to lack of enough oxygen present in water) and the ecosystem gets completely disrupted.

Eutrophication excessive richness of nutrients in a lake or other body of water, frequently due to run-off from the land, which causes a dense growth of plant life.

Answer 2

Answer:

Eutrophication can be defined the process by which the there is a significant increase in the population of algal growth.

This increase in the algal growth is due to the increase in the phosphorous and nitrogen in the water bodies.

The phosphorous increases the growth of algae in the nearby water bodies and depletes the oxygen level in water bodies.

So, Eutrophication is caused by excess of fertilizer(phosphorous) in water.