What is nitrogen fixation?
A) the conversion of gaseous nitrogen into an organism friendly form (ammonia (NH₃) .
B) preplanned setting of atmospheric levels of nitrogen at 78%
C) stabilizing elemental nitrogen into a gaseous two-atom molecule (N₂)
D) the reduction of nitrate (NO₃⁻) to gaseous nitrogen.
Correct Answer:
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A)Organisms that live together.
B)Organisms
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A)the amount of energy in
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A)primary consumers
B)secondary consumers
C)decomposers
D)scavengers
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A)tertiary consumers
B)fungi
C)grass
D)herbivores
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