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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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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.