Deserts Desert Trailhead Deserts generally receive less than 10 inches of precipitation a year, while semiarid regions receive on average between 10 and 20 inches a year. Deserts are moving all the time due to continental drift and growing mountain ranges. Deserts are found between 15 and 30 degrees north and south of the equator.
Deserts vary in age.
The Sonoran Desert in North America is a baby by comparison at about 10,000 years old. Click to take the field trip. Inc. All rights reserved.