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The horizontal fraction bar was introduced by the Arabs.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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There are 20 feet of blood vessels in each square inch of human skin.