There is no 'world desert'. There are about 28 major deserts located across the globe. There is no single entity of a worldwide desert biome.
Sahara
There is a desert biome in central Australia.
THE DESERT BIOME IS THE BIGEST BIOME IN THE WORLD
the Sahara desert
desert
In the United States it is the Mojave Desert that is located within the desert biome. It is a Native American culture that you will find in this region.
Desert is the biome for a desert.
Bacteria and fungi are the main decomposers in the desert and most any biome.
Desert
The desert is a biome.
the desert......
There is no such place as a 'savannah desert.' Savannahs are grasslands and receive more rain than a desert. They are a distinct biome from a desert.
Northern Africa - the SaharaSouth-central Africa - the Kalahari Desert Southwestern Africa - the Namib Desert