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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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Blood is approximately twice as thick as water because of the cells and other components found in it.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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One way to reduce acid reflux is to lose two or three pounds. Most people lose weight in the belly area first when they increase exercise, meaning that heartburn can be reduced quickly by this method.