• One theory for evolutionary change in species that suggests evolution occurs slowly by steadily and that tiny changes in a species add up to major changes over very long periods of time: ,Gradualism
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• Any trait that developes in an organism that helps them survive and reproduce: ,Adaptation
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• A group of simmilar organisms that can mate with each other and produce fertile offspring: ,Species
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• A technique that allows scientist to determine the actual age of fossils: ,Radioactive Dating