5. Peppered moths vary in darkness. Some have a lighter coloration and some have a darker coloration. Before the
industrial revolution only 2% of the moth population was
darker in coloration. After the industrial revolution, 95% of
the population showed this darker coloration. Birds eat the
moths they can see on the trees.
Explain how natural selection will occur

The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. ... Later, when pollution was reduced, the light-coloured form again predominated.As the trees darkened with soot, the light-colored moths were easier to see. They were eaten by birds more and more, while the rare dark colored moths blended in better on the darker trees. This made the dark colored moths have a higher survival rate.

The basic repeating unit of nucleic acids are known as nucleotides. a nucleotide consists of three distinct chemical groups.