Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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Never take aspirin without food because it is likely to irritate your stomach. Never give aspirin to children under age 12. Overdoses of aspirin have the potential to cause deafness.
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Medication errors are three times higher among children and infants than with adults.
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The horizontal fraction bar was introduced by the Arabs.
The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after
The major language areas of the left hemisphere of the brain.
On May 15, 1916, after deliberating for one hour, an all-white jury in Waco, Texas, found seventeen-