In the nitrogen cycle, nitrogen undergoes fixation. What happens to nitrogen during fixation?
Nitrogen combines with other elements.
Nitrogen separates from other elements.
Nitrogen changes from a gas into a solid.
Nitrogen changes from a solid into a gas.
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⁂ Nitrogen is fixed, or combined, in nature as nitric oxide by lightning and ultraviolet rays, but more significant amounts of nitrogen are fixed as ammonia, nitrites, and nitrates by soil microorganisms. ... Within the nodules, the bacteria convert free nitrogen to ammonia, which the host plant utilizes for its development.
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