GENERAL GEOLOGY

Detailed explanation-1: -Deserts in Africa, Saudi Arabia, Australia and the Southwest U.S. are all examples of the dry climate. There are two subcategories: semi-arid and arid. Semi-arid is dry with differing amounts of precipitation; this region gets between 10 to 20 inches of rain a year.

Detailed explanation-2: -One thing all deserts have in common is that they are arid, or dry. Most experts agree that a desert is an area of land that receives no more than 25 centimeters (10 inches) of precipitation a year. The amount of evaporation in a desert often greatly exceeds the annual rainfall.

Detailed explanation-3: -Annual precipitation is often abundant in tropical climates, and shows a seasonal rhythm but may have seasonal dryness to varying degrees. There are normally only two seasons in tropical climates, a wet (rainy/monsoon) season and a dry season.

Detailed explanation-4: -B-Dry Climates The most obvious climatic feature of this climate is that potential evaporation and transpiration exceed precipitation. These climates extend from 20°-35° North and South of the equator and in large continental regions of the mid-latitudes often surrounded by mountains.