Natural selection is the changes of the size and shape of living things in nature.
Natural selection may be defined as favorable variations through which organisms are better adapted and survive in the environment.
Natural selection is an agent of evolution. It is the component that forces the species to change and diverge from its parental species over a period of time.
It may alter the size as well as the shape of living organisms according to their need in nature for survival.
Therefore, natural selection is the changes of the size and shape of living things in nature.
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