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1
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A particular type of living things that can reproduce by interbreeding among themselves.
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2
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Conditions that do not change during an experiment.
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3
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A proposed explanation for a wide range of observations and experimental results that is supported by a wide range of evidence.
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4
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The basic unit of life.
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6
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A condition that is manipulated, or changed, by a scientist.
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7
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Observations that are recorded and analyzed.
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8
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The genetic material that make up that organism.
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10
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A physical environment with different species that interact with one another and with nonliving things.
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17
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The scientific study of all forms of life, or all types of organisms.
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18
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An organized group of related parts that interact to form a whole.
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20
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Any individual living thing.
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