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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
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There are more sensory neurons in the tongue than in any other part of the body.
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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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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.