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In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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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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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.