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The average office desk has 400 times more bacteria on it than a toilet.
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The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.
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The horizontal fraction bar was introduced by the Arabs.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.