Unlimited number of dessert types. Difficult to count or to list.
However, if you mean deserts not desserts, then there are mainly:
Two desert areas. North Africa desert and Saudi Arabia desertNorth Africa desert and Saudi Arabia desert
Only about 20 percent of the deserts of the world are covered with sand.
There are five geographical regions in the Muslim World as follows: 1 Mountain ranges 2 Alluvial Plains 3 Plateaus 4 Oceans and Rivers 5 Deserts
Yes, there are caves in many deserts around the world.
No, many deserts around the world are expanding, not receding.
For a list of all the deserts and semi-deserts of the world, see the related link below.
There are 24 major deserts in the world and dozens of minor desert areas.
There are a total of 25 deserts in this world situated in various parts of the world. Here is the link for their names and locations.
In most deserts of the world there are many towns and cities where food is redily available.
There are 46 independent Muslim countries in the world
There are 46 independent Muslim countries in the world
Engaging the Muslim World has 288 pages.