Geralda is listing all the conditions under which natural selection occurs. So far, she has listed:The environment changes.Organisms in a population have different traits.Which other condition should she include in her list?

Natural selection occurs when individuals with different traits do not all have the same chance of surviving and reproducing. If only some organisms survive and reproduce, traits that help them in the changed environment can become more common in the population. So Geralda should include “Only some of the organisms survive and reproduce.”

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