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Adaptation-A characteristis that improves an individual's ability to survive and reproduce in a particular environment.

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Adaptation-A characteristis that improves an individual's ability to survive and reproduce in a particular environment.

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Species-A group of organisms that are closely related and can male to produce fertile offspring.

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Species-A group of organisms that are closely related and can male to produce fertile offspring.

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Evolution-The process in which inherited characteristics within a population change over generations such that new species sometimes arise.

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Evolution-The process in which inherited characteristics within a population change over generations such that new species sometimes arise.

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Fossil-The trace or remains of an organism that lived long agoimost commonly preserved in sedimentary rock.

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Fossil-The trace or remains of an organism that lived long agoimost commonly preserved in sedimentary rock.

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Fossil Record-A historical sequence of life indicated by fossils found in layers of the Earth's crust.

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Fossil Record-A historical sequence of life indicated by fossils found in layers of the Earth's crust.

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Selective Breeding-The human practice of breeding animals or plants that have certain desired traits.

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Selective Breeding-The human practice of breeding animals or plants that have certain desired traits.

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Natural Selection-The process by which individoals that are better adapted to thier environment survive and reproduce more successfully than less well adapted individuals do;a theory to explain the mechanisn of evolution.

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Natural Selection-The process by which individoals that are better adapted to thier environment survive and reproduce more successfully than less well adapted individuals do;a theory to explain the mechanisn of evolution.

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Speciation-The formation of new species as a result of evolution.

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Speciation-The formation of new species as a result of evolution.