The region would be South America.
That would be the Atacama Desert in northern Chile.
It would be a semiarid grassland or steppe.
The Chihuahuan Desert of west Texas would be the closest.
Snow is a rarity in southern Arizona so would be seen on the mountains only after a rare winter snowstorm in the Sonoran Desert. It would quickly disappear, however.
Antarctica is a polar desert.
El Paso, Texas
In the Sahara desert you would only find animals at an oasis.
An impossibility - the equator is in the tropics and that region receives to much rain to have a desert.
There is no single religion in the southwest desert region of the United States. However, due to the high concentration of Hispanics in the region, Catholicism would be the predominate religion.
In a dry desert
If you are referring to the United States, that would be the Great Basin Desert.