Multiple Choice
Figure 54.9
-How much nitrogen is fixed from human processes?
A) It is equal to the amount fixed by natural means.
B) It is about half that fixed by natural means.
C) It is about double that fixed by natural means.
D) We cannot calculate this value.
Correct Answer:

Verified
Correct Answer:
Verified
Q8: When primary producers expend energy to build
Q12: Which of the following most often controls
Q12: Figure 54.3 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3734/.jpg" alt="Figure 54.3
Q15: Which of the following could be a
Q16: Considering the global carbon cycle,where is the
Q18: Figure 54.3 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3734/.jpg" alt="Figure 54.3
Q19: Figure 54.10 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3734/.jpg" alt="Figure 54.10
Q20: Figure 54.9 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3734/.jpg" alt="Figure 54.9
Q21: Figure 54.9 <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB3734/.jpg" alt="Figure 54.9
Q22: Figure 54.1<br>-How are the components in Figure