Answer:
I believe nitrogen. hope that helps
The endosymbiotic theory opposes that mitochondria in eukaryotic cells rose from C. Endosymbiotic prokaryotes that metabolized oxygen.
Explanation:
In population genetics, the term evolution is defined as a change in the frequency of an allele in a population. ... The allele frequency within a given population can change depending on environmental factors; therefore, certain alleles become more widespread than others during the process of natural selection.
