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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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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.