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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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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The average adult has about 21 square feet of skin.