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Instead it makes the peak of the bell curve even higher than what would be considered normal. To make talking about this easier we will consider the distribution of traits across a population in graphical form. Natural Selection In Populations Article Khan Academy Sometimes this is survival of …

Please try again later. As animals diversify and fill different niches the pressures exerted on them can change in many ways. Natural Selection In Populations Article Khan Academy The functional requirements to be a bird are much different than those required to be a fish. 3 types of natural se…