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Author Question: Around 1800, the piano was a delicate wooden-framed instrument with a range of five octaves. ... (Read 28 times) |
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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There are more bacteria in your mouth than there are people in the world.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).