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15 Cards in this Set
- Front
- Back
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Adaptation
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characteristic that helps an organism survive and reproduce in its' evironment
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Species
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group of organisms that can mate with one another to produce fertile offspring
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population
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groups of individuals of the same species living in the same place
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evolution
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process in which populations gradualy change over time
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sediments
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particles of sand, dust or soil that are depositedin an orderly fashion to form earth's layers
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fossils
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remains or imprints of once-living organisms found in layers of rock
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The Fossil Record
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timeline of life indicated by fossils
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Camparisons of modern whales and large numbers of fossils have supported the hypothesis of what?
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that their ancient ancestors lived on land and could run
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Similarities of which animals suggest that they had a common ancestor?
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human, cat, dolphin, and bats
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naturalist
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scientist who studies nature
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What limits humans to reproduce rapidly?
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starvation, disease,competition, predation
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natural selection
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process by which organisms are better adapted to their environment; survive and reproduce more sucessfully than less well adapted organisms.
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why does variation happen? (Darwin's missing evidence)
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as a result of differences in genes
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what might happen while producing offspring (Darwin's missing evidence)
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changes in genes
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some genes make organsims more likely to what? (Darwins missing evidence)
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reproduce
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