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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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Everyone has one nostril that is larger than the other.
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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Thyroid conditions may make getting pregnant impossible.