Question

about desert 15 lines

Answer 1

Answer:

Explanation:

A desert is a very dry biome. They get less than 25 cm (9.8 inches) of rainfall a year. Another source defines it as "any region that can have a moisture deficit over the course of a year. In other words, they can have less rainfall in a year than they give up through evaporation".[5]

These kinds of areas can cover about 33% of the land on Earth.[6] That includes much of Antarctica, where large areas get no snow at all. The largest hot desert is the Sahara desert, in northern Africa, covering 9 million square kilometers.

Deserts land surfaces are various – examples are stones, sand dunes and snow. They have a wide variety of animals and plants. Deserts sometimes expand (desertification), and sometimes contract.