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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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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The average office desk has 400 times more bacteria on it than a toilet.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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The human body produces and destroys 15 million blood cells every second.
Bike in Tree
Blank periodic table
Tree
Glowing Base Of Tree Made By Arranging Leaves
A phylogenetic tree showing that Denisovans were more closely related to Neanderthals than to member