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The horizontal fraction bar was introduced by the Arabs.
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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.