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Everyone has one nostril that is larger than the other.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.