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Author Question: If an object has a 240 clockwise rotation as one of its symmetries, then it must also have as a symmetry (Read 2253 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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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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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.