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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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Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Excessive alcohol use costs the country approximately $235 billion every year.
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There are 20 feet of blood vessels in each square inch of human skin.