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Author Question: Rays that pass through a lens very close to the lens axis are more sharply focused than those that ... (Read 46 times) |
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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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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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
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The longest a person has survived after a heart transplant is 24 years.
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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.