| change note
| - 2012-07-11 10:08:55.0 [tbs1979]
update Definition (The formation of deserts in arid and semi-arid regions from overgrazing, deforestation, poor agricultural practices, and climate change. Evidence of desertification can be found today in Africa, the Middle East, and the southwestern United States.);
- 2012-07-11 10:08:16.0 [tbs1979]
update Definition (Chiras, Daniel D. 1998. Environmental Science. A Systems Approach to Sustainable Development. Wadsworth Publishing Company. Belmont, California. );
update Definition (Desertification is the formation of deserts in arid and semi-arid regions from overgrazing, deforestation, poor agricultural practices, and climate change. Evidence of desertification can be found today in Africa, the
Middle East, and the southwestern United States.);
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