Earth Science (Climates)
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The Atacama desert in northwest Chile is located on the west side of the Andes and at same latitude in Chile, the east side of the Andes is part of the tropical rain forest. In southern Chile, there is a lot of snow and rain on the west side of the Andes and desert conditions (similar to Reno & Carson city) on the east side of the Andes Mountains. EXPLAIN WHY?
Check these sites for an explanation of the rain shadow. Scroll down to the "Barrier Effect" in the second site.