Multiple Choice
Humans add to nitrogen fixation in two major ways.These are
A) burning fossil fuels and carrying out nitrification.
B) burning fossil fuels and carrying out denitrification.
C) producing artificial fertilizers and burning fossil fuels.
D) producing artificial fertilizers and carrying out nitrification.
E) producing artificial fertilizers and carrying out denitrification.
Correct Answer:

Verified
Correct Answer:
Verified
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