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Even Though Nitrogen Constitutes 78% of Earth's Atmosphere,the Amount Available

Question 2

Multiple Choice

Even though nitrogen constitutes 78% of Earth's atmosphere,the amount available for living things nearly all comes from


A) a few groups of nitrogen-fixing bacteriA.
B) the breakdown of minerals.
C) a few genera of detritivores.
D) the breakdown of dead plants.
E) nitrogen-containing fertilizers.

Correct Answer:

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