Explain how tree coloration affected the survival of different colored moths after the Industrial Revolution

After the pollution from the Industrial Revolution started affecting trees, most of the collected peppered moths were of the dark form. ... 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.

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

helicase, i think thats it