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Author Question: Anxiety is not a common reaction to a perceived threat. Indicate whether the statement is true or ... (Read 41 times) |
Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
There are more bacteria in your mouth than there are people in the world.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.