Until recently,selection favored the darker form of the peppered moth in areas affected by the industrial revolution.

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The industrial revolution caused widespread pollution, which led to trees and buildings becoming covered in soot. The darker form of the peppered moth was better camouflaged in this environment, which made them more likely to survive and reproduce. As a result, natural selection favored the darker form over the lighter form, leading to a shift in the proportions of the two forms in the population. However, in recent years, as pollution levels have decreased, the lighter form has become more common once again.

Until Recently,selection Favored the Darker Form of the Peppered Moth