How does natural selection lead to evolution apex?

Passing on genetic traits through mating and producing more stable offspring.

Explanation:

Natural selection is a concept in which an individuals with certain characteristics  evolve by inheriting heritable genetic characteristics to their offspring thereby fostering high survival rate and reproduction rate.

Through the process of natural selection, the species evolved gradually in order to get better suited to their environments over time.

The three main basis of his theory are -

a) Traits are heritable

b) With natural selection, the survival rate of species increases

c) Inheriting of traits causes variation

answer; i believe the answer is (polygenic inheritance;

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.