The horizontal fraction bar was introduced by the Arabs.
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The FDA recognizes 118 routes of administration.
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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
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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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Excessive alcohol use costs the country approximately $235 billion every year.
Variable Gases of the Atmosphere
Metabolic reactions involving synthesis, interconversion, and utilization of one-carbon adducts of t
The carbon cycle "دورة الكربون"
Greenhouse gases increase in the stratosphere
Functional Groups of Carbon
A sample of carbon monoxide gas occupies 125 mL at 20.0 °C and 455 mm Hg. If the