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8 Cards in this Set
- Front
- Back
Biological evolution
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change over time in population of related organisms.
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cast
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fossil copy of an organism in a rock
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extinction
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when all individuals of an species have died
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geologic time scale
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chart that divides Earths history into different numbers of neutrons.
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isotopes
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atoms of the same element that have different numbers of neutrons.
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mold
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impression of an organism In a rock
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tissue
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similar cells that work together and perform a function.
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trace fossil
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preserved evidence of the activity of an organism.
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