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Did you know?
The horizontal fraction bar was introduced by the Arabs.
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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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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

