Question

eutrophication is caused by _. a. an increase in nutrients b. a decrease in nutrients c. the introduction of new species of animals d. the introduction of new species of plants please select the best answer from the choices provided.

Explanation:

Eutrophication is the process of excessive nutrient enrichment in water - bodies. An increase in nutrients, especially nitrogen and phosphorus, stimulates the growth of algae and other aquatic plants. This leads to eutrophication. Introduction of new species of plants or animals is not the cause of eutrophication, nor is a decrease in nutrients.

Answer:

A. an increase in nutrients