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Author Question: The footprints at Laetoli in Tanzania date to about __________. a. 1.5 million years ago b. 3.6 ... (Read 90 times) |
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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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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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.