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Author Question: A cylindrical rod of length 12 cm and diameter 2.0 cm will just barely float in water of density ... (Read 160 times) |
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.