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(B) The theory of natural selection,proposed by $Charles \ Darwin$,is primarily based on the observation that individuals within a population exhibit

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Natural selection acts on favorable variations

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(B) The theory of natural selection,proposed by $Charles \ Darwin$,is primarily based on the observation that individuals within a population exhibit variations. Some of these variations are heritable and provide a survival or reproductive advantage in a given environment. Natural selection acts on these favorable variations,allowing individuals possessing them to survive and reproduce more successfully than others. Over generations,this leads to the accumulation of these advantageous traits in the population,which is the core mechanism of evolution.

The theory of natural selection is based on which of the following?

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