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According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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There are 60,000 miles of blood vessels in every adult human.
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Medication errors are more common among seriously ill patients than with those with minor conditions.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.