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Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Excessive alcohol use costs the country approximately $235 billion every year.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.