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The horizontal fraction bar was introduced by the Arabs.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.