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5 Cards in this Set

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  • Back
fossils
preserved remains of once-living organisms
macroevolution
the hypothesis that the same processes which work in microevolution can, over eons of time, transform an organism into a completely different kind of organism
microevolution
the theory that natural selection can, over time, take an organism and transform it into a more specialized species of that organism
strata
distinct layers of rock
structual homology
the study of similar structures (bones or organs, for example) in different species