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Author Question: Human beings are all members of a. a single biological species. b. various species, depending on ... (Read 387 times) |
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).
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Illicit drug use costs the United States approximately $181 billion every year.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.