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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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Everyone has one nostril that is larger than the other.
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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
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There are more bacteria in your mouth than there are people in the world.
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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.