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More than 4.4billion prescriptions were dispensed within the United States in 2016.
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).
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.
The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
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![This 1900 photograph of steel factories at night in Duquesne, near Pittsburgh, was tinted by hand. S](https://biology-forums.com/gallery/47/medium_27_24_08_15_1_27_03_22383854.jpeg)