Genetic variation allows for mutations to occurs where survival of the fittest occurs. This makes sure that the most adapted creatures survive and are able to pass their genes on to offspring. Thus causing evolution.
This means that certain cells are made by the body for different reasons. For instance, muscular cells are made for muscles, bone for bones, etc.
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B. It's less dense. Ice floats<span> because it is about 9% less dense than liquid water.</span>
Answer:
2, phenotype
traits are determined using genetics
