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Author Question: ________ is a system whereby workers exchange jobs periodically. (Read 37 times) |
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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.