Use the following figure to answer the question.

Consider the global nitrogen cycle depicted in the figure. 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

Question

Use the following figure to answer the question.

Consider the global nitrogen cycle depicted in the figure. 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

Quizplus · Accepted Answer

Plants require fixed nitrogen to survive, which is produced by nitrogen-fixing bacteria in the soil. Therefore, the limiting portion of the global nitrogen cycle for plants is nitrogen fixation by bacteria.

Use the Following Figure to Answer the Question