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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.
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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).