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प्रश्न
How does natural selection help in evolution? Give an example.
लघु उत्तर
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उत्तर
Natural selection favours individuals with useful inherited variations that help them survive and reproduce. They pass these variations to their offspring, and the variations may become more common over generations. For example, when soot darkened tree trunks during the Industrial Revolution, dark peppered moths were better camouflaged from birds. They survived and reproduced more often, so their population increased compared with light-coloured moths.
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