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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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The average adult has about 21 square feet of skin.
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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
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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.