SCI 275 WK 3 Checkpoint Succession and Natural Selection

SCI 275 WK 3 Checkpoint Succession and Natural Selection -...

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View the succession of the ecosystem in the Succession animation. Is it primary or secondary succession? Explain your answer. After viewing the animated succession of the ecosystem I have come to the conclusion that it was not primary succession. In order for this to be an example of primary succession there would have to be no soil present in the beginning. In slide one you can clearly see that soil was present before anything else took place. In addition, by following the bog in order you can see that the beavers first destroyed the existing vegetation, and then the change in species composition took place after. 9. Although most salamanders have four legs, the aquatic salamander shown below resembles an eel. It lacks hind limbs and has very tiny forelimbs. Propose a hypothesis to explain how limbless salamanders evolved according to Darwin’s theory of natural selection. Darwin’s theory of natural selection states, during the evolution process the number of favorable traits increase while the unfavorable traits are weeded out and
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SCI 275 WK 3 Checkpoint Succession and Natural Selection -...

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