ANATOMY

Detailed explanation-1: -When the atmosphere in London became filled with soot because of the Industrial Revolution, the white trees became darker and light coloured moths were eaten by birds more readily. Within months, moths became darker and lighter moths were rare.

Detailed explanation-2: -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.

Detailed explanation-3: -Q. Why did the population of peppered moths in England change from the light variation to the dark variation after the Industrial Revolution? The soot from industrial revolution caused the light peppered moth to fly away, and only the dark variation was left.

Detailed explanation-4: -With the advent of industry and pollution in urban England, soot began to accumulate on the trees, giving them a darker appearance. As a result, the light moths were no longer the best suited for the environment.

Detailed explanation-5: -But as the Industrial revolution began to really take off in the 1800s, pollution from the dense industrial smoke and soot killed off lichens and darkened tree trunks and walls in towns and cities. As a result, the paler moths became more visible to predators, while the darker variety became more camouflaged.