SAT Subject Biology Practice Question 198: Answer and Explanation

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Question: 198

8. Which describes the cause of eutrophication in lakes?

A. A lack of oxygen
B. A lack of sunlight
C. A lack of nutrients
D. An excess of oxygen
E. An excess of nutrients

Correct Answer: E


Eutrophication, or the growth of algae, is caused by an excess of dissolved nutrients. The source of these nutrients is often agricultural or residential runoff.

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