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Author Question: Map 1-4 compares Songhai, the Kongo, and the kingdoms of the West African forest region. In ... (Read 34 times) |
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.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
The average older adult in the United States takes five prescription drugs per day. Half of these drugs contain a sedative. Alcohol should therefore be avoided by most senior citizens because of the dangerous interactions between alcohol and sedatives.
If you could remove all of your skin, it would weigh up to 5 pounds.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.