Extreme Enviroments: Deserts.
The name of some deserts are the well knowen sahara as well as the lesser known gobi desert. Even though most deserts are hot there are some cold deserts such as the artic and antartic deserts ( more comanly known an the noth and south poles).
Deserts are classified as an extreme enviroment. The biggest hot desert is northern Africa's Sahara Desert; it covers roughly 3,500,000 square miles (9,065,000 square kilometers). The driest deserts are the Atacama desert of northern Chile, South America, and the Lut Desert in eastern Iran; these extreme deserts get less than half an inch (about 1 centimeter) of precipitation each year - and it is from condensed fog, and not from rain.
Some deserts get both very hot (during the day) and very cold (during the night, when temperatures can drop well below freezing). Some deserts, however, are always cold (for example, the Gobi Desert in Asia, and the desert on the continent of Antarctica).
Different animals live in the different types of deserts. Animals that live in the desert have adaptations to cope with the lack of water, the extreme temperatures, annocturnal they burrow beneath the surface or hide in the shade during the day, emerging d the shortage of food. To avoid daytime heat, many desert animals are at night to eat. Many desert animals do not have to drink at all; they get all the water they need from their food. Most desert animals are small.
some animals which live in this extreme enviroment .