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when humans can select variations of organisms that are useful & breed these individuals
Survival for the fittest
also called natural selection; when individuals are better suited to environment
species may be able to mate & the resulting offspring may be okay to reproduce, but if they aren't fertile than they can't
when 2 populations are able to breed but have differences in reproductive behavior that prevents mating
when 2 populations are able to breed but are seperated by barriers (Mountains, Rivers)
5 types of evidence that support Darwins theory
different locations (environments) that can cause variety of organism changes
organisms with similar body structures share common ancestor (similar function & structure)
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