Deserts
Q: What is desert?
A: A desert is a region that receive an extremely low amount of precipitation (less than 400 millimeters, or 16 inches a year), less than enough to support growth of most plants.
Types of Deserts
If you classify deserts by temperature, there are two types of desert. Hot desert and cold desert. Hot desert temperature ranges from 20 to 25 ℃ (68 to 77 ℉); yet cold desert temperature ranges from -2 to 4 ℃ (28 to 40 ℉)
If you divide deserts according to the amount of precipitation they receive, then you will find three kinds of deserts: extremely arid lands ("arid" means dry), arid lands, and semiarid lands. Extremely arid lands receive no rainfall, arid lands receive less than 250mm annual rainfall, and semiarid lands get an annual precipitation of between 250mm to 500mm
If you divide deserts according to the amount of precipitation they receive, then you will find three kinds of deserts: extremely arid lands ("arid" means dry), arid lands, and semiarid lands. Extremely arid lands receive no rainfall, arid lands receive less than 250mm annual rainfall, and semiarid lands get an annual precipitation of between 250mm to 500mm