22
QuizMultiple Choice

Energy Flow in Ecosystems — Unit test

Question 22 • AISD-Biology B CR (25-26)

Which of the following would be a result of eutrophication of a lake?

Answer
A
undergrowth of water plants
B
hypoxia, or low levels of oxygen
C
decreased decomposition
D
inactivity of fertilizers

Explanation

Eutrophication occurs when excess nutrients, often from fertilizers, cause algae and other aquatic plants to grow rapidly. When this excess plant matter dies, decomposers break it down and use up oxygen in the water, causing hypoxia, or low oxygen levels. Therefore, the result is hypoxia, not decreased decomposition.

AI-written and checked against the verified answer.

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