1. Explain the difference between the mechanisms of evolution proposed by Lamarck and Darwin?2. Suppose the length of tail feathers in an imaginary bird species differs among individuals and this has a strong positive effect on reproductive success. Further suppose that variation in tail feather length is actually caused by differences in what they happen to eat, not genetics.Would natural selection act on this trait in this population? Why or why not?3. Explain why a scientist is unlikely to say, “Evolution is just a theory.”Hint: there are two reasons, one is biological while the other applies to all branches of science.

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