Question

Which best defines nitrogen fixation?

the process of creating free nitrogen for plants to absorb
the breakdown of nitrogen in the soil
the conversion of nitrogen gas into a usable form
the destruction of the bonds between nitrogen and other elements

Answer 1

Answer:

c)the conversion of nitrogen gas into a usable form

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Answer 2

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Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia (NH. 3) or related nitrogenous compounds in soil. Atmospheric nitrogen is molecular dinitrogen, a relatively nonreactive molecule that is metabolically useless to all but a few microorganisms.