What does the rain-shadow effect cause? Where in South America is affected greatest by the rain-shadow effect?

Please help me!!!!!! thanks :)

9 answers

http://geography.about.com/od/physicalgeography/a/rainshadow.htm

http://www.mapsofworld.com/south-america/

http://ngm.nationalgeographic.com/ngm/0308/feature3/images/mp_full.3.jpg

I'll be glad to check your answer.
is it the death valley in california?
Since when is Death Valley in South America. The last I knew it was in California in North America.
i didn't know that
they moved it (death valley) to south america
sorry about that ms.sue is it the atacama desert
Right.
FINALLY!!! :D
THANK YOU SO MUCH!!!
You're very welcome.