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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.