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Author Question: In 1860, only ____________________ percent of slave owners owned 20 or more slaves. Fill in the ... (Read 43 times) |
There are 20 feet of blood vessels in each square inch of human skin.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.
If you could remove all of your skin, it would weigh up to 5 pounds.
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.