Dendrites is 1
Soma is 2
Nylon sheeth is 3
Node of Ranvier is 4
Synapse is 5
Answer:
Nitrogen
Explanation:
It can change in the Atmosphere or on land:)!
There is no answer that is right except for C. Natural Selection.
Genetic Recombination doesn't change gene frequency;nor does migration. (Unless it's local)
Mutation could be the answer, but since mutations are too rare to really power Evolution, the only logical answer is Natural Selection.