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Everyone has one nostril that is larger than the other.
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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
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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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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.