1. 
   Aridisols
   Aridisols (or desert soils) are a soil order in USA soil taxonomy. Aridisols (from the Latin aridus, for “dry”) form in an arid or semi-arid climate. Aridisols dominate the deserts and xeric shrublands, which occupy about one third of the Earth`s land surface. Aridisols have a very low concentr...
   Found op http://en.wikipedia.org/wiki/Aridisols
   
   
2. 
   Aridisols
   Soil order (type) of the United States Natural Resources Conservation Service Soil Classification System. Aridisols are commonly found in dry environments that are low in organic matter and rich in deposited salts.
   Found op http://www.physicalgeography.net/physgeoglos/a.html
   
   

Tip: double click on a word to show its meaning.