There are 20 feet of blood vessels in each square inch of human skin.
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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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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.
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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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The horizontal fraction bar was introduced by the Arabs.
This 11-month old girl demonstrates one of the abilites of a child of this age group - creating a to
False Solomons Seal
Stages in the establishment of a cell culture.
Children make a fast adjustment to a new culture, although, as with these Hmong children in ...