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Author Question: Sodium-24 has a half-life of 15 h. How many hours is three half-lives? (Read 39 times) |
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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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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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.