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Sagot :
The environment in which the moth lived was uncontaminated. This made dark moths rare. As the areas where bright moths were found became more polluted there were fewer bright moths in polluted/dark areas.
Light moths began to evolve after they could no longer survive in the dark forest. To protect themselves from predators, they began to blend into darkened and polluted areas. To study bird predation on moths directly, Dr. Kettlewell's bright and dark moths on tree trunks were where he could observe them.
He noted the number of times birds found moths. He found that birds on dark logs were twice as likely to eat light moths than dark moths. was found to selectively hunt Therefore, the evolution of dark-colored bodies provided a survival advantage in contaminated areas. He finds that light moss camouflage in dark forests is not working. Dark moths live longer in dark forests, giving them more time to breed.
Learn more about Kettlewell's experiment here:- https://brainly.com/question/22235307
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