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Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
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?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.