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12 Biology Unit 3 Revision QCE Flashcards | StudBud
12 Biology Unit 3 Revision QCE
1 / 46
Nitrogen is not taken up by plants directly from the atmosphere because:
A
it is uncommon in the atmosphere.
B
it is primarily stored in rocks.
C
it is free nitrogen and must first be fixed.
D
it is free nitrogen and must first be reduced.
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