Question

The atmosphere is 78% nitrogen, and yet people add nitrogen-rich fertilizers to the soil to make plants grow better.Why canât plants get all the nitrogen they need from the atmosphere?
(1) Atmospheric nitrogen is too light for plants to use.
(2) Plants cannot absorb materials from the atmosphere.
(3) Atmospheric nitrogen is not in a chemical form that plants can use.
(4) Materials in the atmosphere have already been used and cannot be used again

Answer 1

Heya! !
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The reason of the above question is that atmospheric nitrogen is not in a chemical form that plants use.
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