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Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
Your heart beats over 36 million times a year.
Did you know?
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.
Did you know?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.