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Author Question: The CIA World Factbook states that in the United States, those at the bottom lack the education and ... (Read 49 times) |
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Cyanide works by making the human body unable to use oxygen.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.