Multiple Choice
Which of the following is true of nitrogen?
A) N2 is scarce in the atmosphere, therefore, plants must obtain other sources of nitrogen.
B) Animals require nitrogen from the food they eat for the synthesis of carbohydrates and lipids.
C) Nitrogen-fixing bacteria convert N2 into compounds plants can utilize.
D) Nitrogen is plant food and, therefore, provides plants with energy.
Correct Answer:

Verified
Correct Answer:
Verified
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