9. The nitrogen cycle relies on various organisms carrying out very specific 7 points
functions. One vital group is the nitrogen-fixing bacteria. Which of the
following explains how the nitrogen cycle would be disrupted if there were
a sudden population explosion of nitrogen-fixing bacteria? *
A. A population explosion of nitrogen-fixing bacteria would lead to a decrease in
ammonium levels in the water, which will cause the water to become very acidic.
B. A population explosion of nitrogen-fixing bacteria would cause dissolved nitrogen
levels in the water to increase
C. A population explosion of nitrogen-fixing bacteria would cause dissolved oxygen
and dissolved carbon dioxide levels to decrease.
D. A population explosion of nitrogen-fixing bacteria would cause ammonia levels to
rise, which can be detected by testing the ammonia levels in the water.
