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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According to Harris Interactive, 70% of men and 57% of women shower daily.
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Babies' eyes do not produce tears until the baby is approximately six to eight weeks old.
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Research has determined that most people are happiest at 7:26pm on a Saturday night.
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The average person will go on a date at least 100 times before they finally marry.
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It is estimated that at any one time, 0.7% of the world's population are drunk.
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A chance of a woman having twins is increased after the age of 35. About 1 in 27 women will give birth to twins after this age. After 50 the chances of having twins is 1 in 9.
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Approximately 141 million Valentine's Day cards are exchanged worldwide every year.
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