When individuals of the same species are reproductively isolated, genetic differences may accumulate in sufficient number so that new species could emerge. Such an event would be an example of Group of answer choices A. equilibrium. B. macroevolution. C. microevolution. D. the founder effect.

B.macroevolution

Explanation:

Macroevolution is a type of evolutionary change pattern and process that brings about the emergence of new species through isolation, genetic drift, natural selection or gene flow. Macroevolution occurs on a larger scale above species level, unlike microevolution that is restricted to within a species or population.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.