A chauffeur refers to an individual who drives people around for a living. An individual will be required to be fingerprinted before acquiring a chauffeur's licence in New York. An individual may be required to pass a defensive driving course before acquiring a chauffeur's license. In some states, the type of chauffeur license needed will depend on the number of people being transported. In New York, a chauffeur license is a Class E license, which is a taxi license.
Biological magnification (or biomagnification) is the buildup of certain substances, such as DDT, in the bodies of organisms at higher trophic levels of food webs. DDT was once used extensively as an insecticide. DDT builds up in the fatty tissues of organisms.
The magnification of a microscope describes the increase in apparent size of an object compared with its actual size. An object magnified 10 times (10X) appears 10 times larger than it really is. Total magnification is the product of the ocular lens magnification and the objective lens magnification. Magnification does not describe the quality of the image. Magnifying an object without good resolution is called empty magnification, as the image appears larger but no greater detail can be seen.