SAT Subject Biology Practice Question 206: Answer and Explanation

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Question: 206

16. Which of the following includes organisms that are able to utilize nitrogen in the form of nitrogen gas (N2)?

A. Producers
B. Primary consumers
C. Secondary consumers
D. Tertiary consumers
E. Decomposers

Correct Answer: E

Explanation:

Only certain soil bacteria are able to utilize nitrogen in the form of nitrogen gas from the atmosphere. Other organisms require nitrogen-fixing bacteria to convert nitrogen gas to other usable compounds (such as ammonia).

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