Blood is approximately twice as thick as water because of the cells and other components found in it.
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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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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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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 horizontal fraction bar was introduced by the Arabs.
A true albino squirrel. Note the pink eyes.
true story
A recruiting poster for the “True Sons of Freedom” encouraged African Americans to enlist. In fact,