How would the nitrogen cycle be disrupted if humans prevented the process of denitrification from occurring? A The amount of atmospheric nitrogen (N2) would decrease, and nitrogen-fixing bacteria would die off. B The amount of atmospheric nitrogen (N2) would remain constant, and nitrogen-fixing bacteria would remain constant. C The amount of atmospheric nitrogen (N2) would remain constant, and nitrogen-fixing bacteria would increase. D The amount of atmospheric nitrogen (N2) would increase, and nitrogen-fixing bacteria would decrease.