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Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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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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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.