Figure 54.9 -Considering the Global Nitrogen Cycle Depicted in the Figure Above,what

question 18

Multiple Choice

Figure 54.9
-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

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