Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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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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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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