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A ambulocetus is a walking whale and it is about 11-12 feet long also they had strong limbs.
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A genetic drift is defines as the change in the allele frequency of an existing population. It arises as a result of random variation in a population. The rate of genetic drift would be greatest in a small population that are geographically isolated from the parent population. A change in the allele frequency of a population as a result of chance rather than the natural selection.
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Proteins contain the elements carbon, hydrogen, and oxygen just as carbohydrates and lipids do, but proteins are the only macronutrient that contains nitrogen. In each amino acid the elements are arranged into a specific conformation around a carbon center.
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B) plants get the energy they need for photosynthesis from sunlight
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Bacteria :) Please follow me if my answer helped
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