Figure 54.9 -Considering the Global Nitrogen Cycle,how Are Humans Altering This Cycle

Multiple Choice

Figure 54.9
-Considering the global nitrogen cycle,how are humans altering this cycle?

A) industrial nitrogen fixation
B) nitrogen lost to the atmosphere
C) reduction of nitrogen available to terrestrial ecosystems
D) reduction of nitrogen fixation by bacteria
E) permanent burial of nitrogen in coastal environments through runoff