Main PageA. INTRODUCTION
These are studied together because dry winds help create deserts, and the lack of vegetation in deserts allows wind erosion and deposition to be most effective and obvious.
0 to 10" of rain = arid climate
10 to 20" of rain = semi-arid climate = L A (14")
Dry regions cover about 30% of the Earth’s land surface.
The energy source that drives climate is the Sun’s heat.
The force that controls erosion and deposition is the Earth’s gravity.
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