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Author Question: Surveys conducted in high schools may be excluding some of the most drug-prone young people in the ... (Read 140 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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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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The horizontal fraction bar was introduced by the Arabs.
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Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.
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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.