Nitrogen fixation is A. the conversion of gaseous nitrogen into an organism friendly form (ammonia (NH3). B. preplanned setting
of atmospheric levels of nitrogen at 78% C. stabilizing elemental nitrogen into a gaseous two-atom molecule (N2) D. the reduction of nitrate (NO3-) to gaseous nitrogen. E. the repair of D.N.A. by adding nitrogen to the organism's diet
The correct answer is option A. "the conversion of gaseous nitrogen into an organism friendly form (ammonia (NH3)".
Explanation:
Nitrogen fixation is a biological process at whichgaseous nitrogen is converted into an organism friendly form (ammonia (NH3). Nitrogen fixation is performed in nature by microorganisms in the soil. Some of these microorganisms have a symbiotic relationship with plants. These microorganisms convert the gaseous nitrogen into ammonia, which is used by the plant as a source of nitrogen.
