Succession and Natural Selection

Succession and Natural Selection - reproductive achievement...

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Checkpoint: Succession and Natural Selection Primary succession is the change in species composition over time in a beforehand unpopulated environment. Soil does not exist when the primary succession begins. Secondary succession is the change specie or species composition that takes place following some commotion destroys the present plant life; soil is already present. The succession of the ecosystem in the Succession animation is secondary. The disturbance was the procedure of the beavers that dam a creek to create a pond so that they can build a lodge. As seen in the presentation there is soil before anything happens. I believe that adaptation is the main cause for the salamanders being limbless. Adaptation is an evolutionary alteration that improves a specie or species chance at survival and
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Unformatted text preview: reproductive achievement in a given environment. In view of the fact that the, environment changes, the salamanders has to also adapt with their environment. Ultimately the buildup of adaptive modifications that one species will have, might have an end result of a new species. We must also take into account of evolution which happens through the process of natural selection. Natural selection is when thriving traits are passed on from generation to generation and traits that are not thriving are not passed on. It also consists of four premises, overproduction, variation, limits on population growth, and differential reproductive success. In this case the limbs may not have been a successful trait for the salamanders....
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This note was uploaded on 10/21/2010 for the course SCI 275 SCI 275 taught by Professor Lee during the Spring '09 term at University of Phoenix.

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