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 natural selection

there is a natural variation within any population and save individual have more favourabe variation than othes
the species produce a large number of offspring
the struggle for servival within the population elemits the unfit individual and those with favorabe variation servive and pass on to their progeney to continue .this is called natural selection

genetic draft

it is refered to randam change in the gene frequencies in a small population
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If u have the last year question paper of science set3 class 10th please give me
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