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pkclary pkclary
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6 years ago
Considering the global nitrogen cycle depicted in the figure above, what is the limiting portion of the cycle for plants?
A) industrial nitrogen fixation
B) nitrogen lost to the atmosphere
C) internal nitrogen cycling in the oceans
D) nitrogen fixation by bacteria
Textbook 
Biological Science, Canadian Edition

Biological Science, Canadian Edition


Edition: 2nd
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GTi_NickyGTi_Nicky
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6 years ago
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