Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Everyone has one nostril that is larger than the other.

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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.

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