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.
The Deserts of Africa - Unimaginable Beauty. Africa - the second largest continent in the world is also home to the largest desert in the world - the Sahara. In fact there are three deserts on the continent - The Sahara, the Namib and the Kalahari. Together these three amazingly vast and diverse land masses cover a large portion of Africa.