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Biology
OpenStudy (anonymous):

One of Darwin's principles is that minor variations in all traits exist within species. Why is this idea important to his theory of evolution? A. Variation allows some individuals to survive better than others and so evolve over time. B. Variation allows some individuals to interbreed with other species and so evolve over time C. Varation allows some indivudals to move to new enviorments and develop into new species.

OpenStudy (anonymous):

i think it might be A or B

OpenStudy (nincompoop):

variation can be both advantageous and the opposite when it comes to a species' ability to adapt in changing environment or be ahead of competition with other species when it comes to attaining food from scarce resources, thus their ability survive and propagate depends on it, and overtime if they happen to survive they evolve

OpenStudy (nincompoop):

bmw, please do not give out answers that is cheating

OpenStudy (nincompoop):

be mindful that evolution is not strictly within species level. it is in population level

OpenStudy (anonymous):

will i wont and i dont

OpenStudy (anonymous):

I think the answer is A. because

OpenStudy (anonymous):

small variations mean some will do better than others and they will get to reproduce. For example, giraffes with the longest necks can reach more leaves high in the trees. If there are a shortage of leaves, the giraffes with the longest necks will be able to eat more so will survive and reproduce (the giraffes with shorter necks will be at a disadvantage). So the babies of the long necked giraffes will have long necks also, and so will their babies - can you see how over time the giraffes will evolve to have longer necks?

OpenStudy (anonymous):

so is it A

OpenStudy (anonymous):

yes it is A. for sure.

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