Evolution occurs when there are changes in the frequencies of alleles within a population of interbreeding organisms for example; the allele for black color in a population of moths becoming more common. So if the resources of the forest are breaking up, and group of a species of plant or animal is naturally selected by the environment, and those surviving species interbreed and evolution would be affected that way. Small horned moose might be naturally selected over small horned moose. A worm that survives in warm soil might be naturally selected over a worm that survives in cold soil.
May 23rd, 2015
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