Unformatted text preview: The obvious fact is that there had to be some kind of reason required for this species, of aquatic salamander, to evolve itself to have no back limbs and only tiny forelimbs. Through Darwin’s theory of natural selection, I believe that the reason for this would fall under rule three; limits on population growth, or a struggle for existence. While four limbs are a blessing on land, they would cause a creature in water to be a much slower swimmer. This could make them become much easier prey for predators. Not needing the back limbs in water, the aquatic salamander over years eliminated them all together. The fact that the forelimbs are tiny are an example, in my opinion, that they are in the process of removing them as well....
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- Spring '09
- Evolution, Causality, Beaver dam, aquatic salamander