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Author Question: In a contest, two tractors pull two identical blocks of stone the same distance over identical ... (Read 4144 times) |
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
Everyone has one nostril that is larger than the other.
Blood is approximately twice as thick as water because of the cells and other components found in it.
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.
Pregnant women usually experience a heightened sense of smell beginning late in the first trimester. Some experts call this the body's way of protecting a pregnant woman from foods that are unsafe for the fetus.