Desertification

Question 1

Desertification

Answer 1

expansion of arid conditions into a nonarid environment

Question 2

major causes of desertification

Answer 2

poor grazing management
cultivation of marginal lands
deforestation
destruction of vegetation in arid regions
expanding human population
urbanization
incorrect irrigation practices leading to salinization
environmental protection as a low priority

Question 3

most endangered regions are near the world’s five main deserts

Answer 3

Sonoran Desert (NW Mex. & SW US)
Atacama Desert in S. America
Kalahari Desert in S. Africa
most of Australia
large desert mass made up by the Sahara, Arabian, Great Indian, etc.