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| ______ are scientists who study artifacts. |
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| ______ are scientists who study fossil remains of ancient animals and plants. |
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| ______ are scientists who study human culture. |
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| ______ detects changes in the earth's magnetic field. |
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| ______ measures the quantity of carbon-14 atoms. |
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| ______ measures the rate of decay of atoms in volcanic rock. |
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| Most evidence supports the idea that modern humans originated on the continent of ______. |
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| ______ lived in small groups, or clans of 20-30. |
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| Extended family members lives as ______. |
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| They made needles and spearheads out of ______, carved figures out of stone and ivory, and painted ______ and symbols on cave walls. |
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