Thursday, January 7, 2010

How is natural selection the foundation of evolution?

evolution is essentially a change in populations over time, for example moths skin color changing to match soot covered trees. in order for those changes to occur there must be something to ';filter'; variations. these filters are selective pressures, and the most basic one is natural selection in which creatures that are born with bad variations don't survive as long, and thus don't reproduce as much as those born with good variations.How is natural selection the foundation of evolution?
organisms are selected to evolve by ? but they have a need to evolve or ';they get ahead of the pack'; compared to the other animals in there species b/c they are selected to become more fit to live in the enviorment that was changing at the time it is the structure for evolution because it is a demonstartion of evolutionHow is natural selection the foundation of evolution?
The same way selective breeding is the foundation of the dairy industry.
Those in a population that nature selects to die, do not evolve

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