Question

The overgrowth of algae on the surface of this water is caused by


A) a decrease in the oxygen levels in the water

B) not enough primary consumers in the ecosystem

C) an increase in nitrogen levels in the water from fertilizer runoff

D) an excess of carbon dioxide in the water due to an increase in the number of fish

Answer 1

Answer:

The answer is C.  an increase in nitrogen levels in the water from fertilizer runoff

Explanation:

The overgrowth of algae on the surface of this water is caused by an increase in nitrogen levels in the water from fertilizer runoff.

Answer 2

An increase in nitrogen levels in the water from fertilizer runoff. Thus the correct option is C.

What is algae?

Algae is defined as a group of predominantly aquatic, photosynthetic, and nucleus-bearing organisms that lack the true roots, stems, leaves, and specialized multicellular reproductive structures of plants.

Excess nitrogen and phosphorus cause an overgrowth of algae in a short period of time, also known as algae blooms. The overgrowth of algae consumes oxygen and blocks sunlight from underwater plants.

Aquatic herbicides used to treat algae are called algaecides. They're often copper-based compounds (e.g. copper sulfate, copper chelate communes, chemical Endothall). Effective if the entire surface is treated.

For more information regarding algae, visit:

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