There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
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Most people smile when they are frustrated, according to a study.
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The average person will go on a date at least 100 times before they finally marry.
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Two in five people in the world marry their first love.
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A person can live without food for about a month, but only about a week without water.
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‘Old people smell’ is actually caused by a chemical, 2-nonenal, that old people secrete through their skin
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Intelligent people have more zinc and copper in their hair.
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