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2
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Any difference between individuals of the same species.
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3
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An explanation that has been well tested for a wide range of observations or experimental results.
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4
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A process in which organisms that are best adapted to their environment are most likely to survive and reproduce.
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5
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The key that helps an animal survive!
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6
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A process that involves change from ancient to modern.
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7
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Involves similar organisms that can mate with each other.
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1
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If it is a _________________, it is a structure that have been inherited from a common ancestor.
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