wk 3 Succession & Natural Selection

wk 3 Succession & Natural Selection - Natural...

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Succession and Natural Selection The Succession Animation shown in this chapter would be considered secondary. The beavers created a dam that in turn disrupted the natural flow of the water, which then affected the surrounding areas. Secondary succession is a change that takes place after some disturbance destroys the existing vegetation which in this case, are the beavers that caused a pond to form and setting off a chain if ecological change with the trees, plants and surrounding soils. I would hypothesize that the water salamander had no use for four legs in the water and much like an eel, it would need to slither along in the water to eat, hide and survive.
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Unformatted text preview: Natural selection proposes that everything will either A) adapt to the environment (such as the aquatic salamander) or B) face extinction. It also consists of four premises, overproduction, variation, limits on population growth, and differential reproductive success. All these factors play a part in the Natural Selection of things. Also when you take into account the many different bodies of water that range in temperature and density you are adding another factor to the mix, I would suggest the two tiny limbs that remained are either useless to the Salamander or serve as some sort of assistance is burrowing or scavenging for food....
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This note was uploaded on 11/14/2010 for the course BIO 100 BIO/100 taught by Professor Ray during the Spring '09 term at University of Phoenix.

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