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Author Question: Ethnographic data show that the switch from food gathering to food production led to a(n) ... (Read 215 times) |
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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The average adult has about 21 square feet of skin.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.