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Unformatted text preview: change, is a prime example of secondary succession. NATURAL SELECTION: EVOLUTION OF SALAMANDERS Natural selection primarily states that “only the strong survive”. An aquatic salamander primarily lives in water and many of them have a set, or sets of gills. They lay their eggs in water and spend much of their lives submerged (Giles, 2002). It is characteristic of these aquatics to have short, puny front legs, no hind legs, and an eel-like appearance. The theory behind these salamanders with no back legs is that they do not need them. They can simply move around in the water better without them. Carrying that extra weight in water slows them down. SUCCESSION AND NATURAL SELECTION 3 References Giles, M. (2002). Natural Guide Journal . Retrieved from http://www.wavecrestdiscoveries.com/articles/salamander.htm...
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This document was uploaded on 08/12/2011.
- Spring '09
- Environmental Science