You have studied the story of Peppered moths in England. Had the industries been removed, what impact would it have had on the moth population? Discuss.

(A) In the population of the Peppered moth $(Biston \text{ } betularia)$, two variants existed: the light-colored (grey) and the dark-colored (melanic/black).
Before industrialization $(1850)$, the light-colored moths were prevalent because they blended well with the lichen-covered tree trunks, providing effective camouflage against predators.
The dark-colored moths were easily spotted and preyed upon, keeping their numbers very low.
With industrialization $(1920)$, tree trunks became covered with black soot, which killed the lichens. This provided better camouflage for the dark-colored variant, leading to an increase in their population.
If the industries had been removed, the environment would have gradually returned to its pre-industrial state (lichens would have regrown). Consequently, the dark-colored moths would have lost their camouflage advantage, become more visible to predators, and their population would have declined, while the light-colored moths would have regained their selective advantage.