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Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.