Question

A study indicates that fertilizers from nearby farm fields have entered a lake. Which of the following describes a likely change in this ecosystem in the future? A. Algae populations will increase, and trout populations will decrease. B. Algae populations will decrease, and trout populations will increase. C. Both algae and trout populations will decrease. D. Both algae and trout populations will increase.

Answer 1

I believe the answer is A

Answer 2

Answer: Option A

Explanation:

The crops needs nutrition from the soil to grow. When there is not enough nutrients in the soil fertilizers are added to the soil for the proper growth of crops.

Along with the water the fertilizers containing nitrogen and phosphorus move into the nearby water bodies.

These nutrients helps in the growth of algae in water and this decreases the level of oxygen in the water. this decreases the fishes and other aquatic animals in water.