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Author Question: The ________ system includes the brain, spinal cord, and nerves. Fill in the blank(s) with ... (Read 53 times) |
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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There are 60,000 miles of blood vessels in every adult human.
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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.
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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.
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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."