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The horizontal fraction bar was introduced by the Arabs.
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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.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.