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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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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.