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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
A typical termite colony
A typical distributor-type diesel injection pump showing the pump, lines, and fuel filter.
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...