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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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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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Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.