Which of the following make important contributions to nitrogen fixation by human activities?
A) combustion of fossil fuels
B) industrial production of nitrogen fertilizers
C) use of crop rotation in agriculture
D) All of the choices are correct.
E) only industrial production of nitrogen fertilizers and use of crop rotation in agriculture

Question

Quizplus · Accepted Answer

All the choices contribute to nitrogen fixation: combustion of fossil fuels releases nitrogen oxides, industrial production of fertilizers fixes atmospheric nitrogen, and crop rotation often involves legumes that fix nitrogen biologically.

Which of the Following Make Important Contributions to Nitrogen Fixation