Why can plants not absorb nitrogen directly from the atmosph...

Question

Why can plants not absorb nitrogen directly from the atmosphere?

A

Nitrogen in the atmosphere evaporates before it can be absorbed.

B

Gaseous nitrogen is too unreactive to be absorbed and used by plants.

C

Nitrogen only makes up less than 1% of the gases in the atmosphere, so there is not enough to be absorbed.

D

Gaseous nitrogen is too reactive to be taken in directly by plants and must go through the roots.

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