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Author Question: Which of the following mandated the use of filtering technologies in schools and libraries that ... (Read 30 times) |
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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Your heart beats over 36 million times a year.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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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.