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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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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.
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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.