Desertification
Desertification is the term for an expanding area of desert.
The huge desert that expands from China to Mongolia is the Gobi desert.
The Gobi Desert covers part of China and Mongolia.
The Gobi Desert is found in northwestern China and southern Mongolia.
sahara
the desert is called the desert
The Sahara is rapidly expanding due to desertification.
Its called a desert. Examples are the Sahara Desert and the Kalahari Desert.
The desert is called either rajastan desert of the Thar Desert
The frozen desert is called Antarctica.
barometric pressure
Rattlesnakes are called rattlesnakes in the desert and elsewhere.