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Chapter 6 Vocab

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Across
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An inherited trait that increases an organisms chance of surviving and reproducing in its environment
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The resemblance of one species to another species
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When the last individual organism of a species dies
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An adaptation that enables species to adapt to its enviorment
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The change over time in the populations of related organisms
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Body parts of organisms similar in structure and position
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Made up of all the fossils ever discovered on earth
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Body parts that have lost their original function through evolution
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The impression of an organism in a rock
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Process in which populations of organisms with variations live longer, compete better, and reproduce more
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A person who studies plants and animals by observing them
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A chart that divides earths history into different units
Down
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The preserved evidence of the activity of an organism
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A fossil copy of an organism in a rock
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A slight difference in an inherited trait of individual members of a species
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The study of similarities and differences among structures of living species
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Body parts that perform a similar function
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The science of the development of embryos