Nitrogen fixation is A) the conversion of gaseous nitrogen into an organism friendly form (ammonia (NH₄⁺). 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

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Quizplus · Accepted Answer

Nitrogen fixation refers to the process of converting gaseous nitrogen (N2) into a form that can be utilized by organisms. This form is typically ammonia (NH3) or ammonium ions (NH4+), which are more "friendly" to living beings. This conversion can be carried out by nitrogen-fixing bacteria or through industrial processes. Therefore, option A is the best choice as it accurately describes the process.

Nitrogen Fixation Is