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what made or caused the grand canyon?
asked Apr 8, 2010 by triuser (1,774 points)

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The most powerful force to have an impact on the Grand Canyon is erosion, primarily by water (and ice) and second by wind. Other forces that contributed to the Canyon's formation are the course of the Colorado River itself, vulcanism, continental drift and slight variations in the earths orbit which in turn causes variations in seasons and climate.
answered Apr 9, 2010 by trianswer (22,754 points)

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