The peppered moth has evolved significantly during the last two centuries. Peppered moths rest during the day on trees and need camouflage to prevent predators seeing them. Before the Industrial Revolution in Britain and North America most peppered moths were light coloured. The trees where they rested were also light coloured and covered with lichens. During that time light forms flourished. Later when pollution darkened trees darker coloured moths developed which could hide better on darker trees.
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