desert
Desert (also known as "desert", "desert desert", English: Desert) refers to the rainfall is very small, the Earth's surface biological and sparsely populated areas or natural landscape. Most of the desert's average annual precipitation is less than 400 millimeters (16 inches). The usual definition defines a real desert as an area with an average annual rainfall of less than 250 mm (10 inches). The semi-arid climate or grassland climate is defined as an average annual precipitation of between 250 mm (10 inches) and 400 to 500 mm (16 to 20 inches) of the area. Desert can also be defined as a region where evaporation is greater than precipitation. In the Köppen climate classification system, the desert is classified as a tropical desert (BWh) or temperate desert (BWk) climate. In the Sandstreet climate classification system, the desert is classified as arid high temperature climate. ...