What are facts about deserts?
1. Deserts are the driest places in the world, with less than 25cm of rain per year. This includes Antarctica, where precipitation is also extremely low.2. Deserts are not all sandy, and only about 20% of the earth's deserts are sandy.3. Pebbly deserts in Australia are known as "gibber", which comes from the aboriginal word for "stone".4. About one-third of the earth's land area is classified as desert, either arid or semi-arid.5. There are many desert-dwelling species of animals which do not need to drink water, and desert-dwelling flora which captures and stores its water in unique ways.6. Deserts can be hot (e.g. Sahara) or cold (e.g. Atacama desert or Antarctica).An estimated one-third of the Earth's land is arid and semi-arid desert.There are many desert-dwelling species of animals which do not need to drink water, obtaining all their moisture needs from the foods they eat.A desert is definied as any area which receives less than 250mm of precipitation per year.Earth's desert lands are divided into two sub-groups based on how much rainfall they receive: extremely arid lands have at least 12 consecutive months without rainfall, arid lands have less than 250 mm of rainfall annually.The world's largest desert is Antarctica.The world's largest hot desert is the Sahara.temperatures can drop as low as 18 degrees Celsius and can get as high as 49 mountains keep it from rainingthey cover about 1/5 of the earths surfaceif you know anymore please add onthe desert is also used as a national park and that's true