|
Author Question: Recall the Application about how having car insurance affects driving behavior to answer the ... (Read 107 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.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
The human body produces and destroys 15 million blood cells every second.