3. Free electives: Free electives are courses in addition to the Core Curriculum and major requirements sufficient to reach a minimum of 120 credit hours for graduation. Students may graduate with more but not less than 120 credit hours.
The four major North American deserts of this type are the Chihuahuan, Sonoran, Mojave and Great Basin. Others outside the U.S. include the Southern Asian realm, Neotropical (South and Central America), Ethiopian (Africa) and Australian. The seasons are generally warm throughout the year and very hot in the summer.
Location of Deserts. The location of deserts is dependent on two factors, latitude and global wind patterns. Most deserts are located between 15' and 35' latitude, both north and south of the equator. In terms of global wind patterns, most deserts are located within the Southeastern and Northeastern trade winds belt.