There are many deserts in the world but the largest is the Sahara which spreads across eleven countries in Africa.
The desert is one of the biomes that receives very little precipitation. In the day time the desert has scorching temperatures, But during the night the temperature can drop 40 degrees.
The desert can only grow certain plants because of the lack of water but the cactus is one of the plants that can store water for a long time. It is the same with animals but lizards and snakes can survive a long time without water.