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3 answers

Water

2006-12-13 11:02:51 · answer #1 · answered by Pecos 4 · 1 0

Erosion caused by flowing water is the most powerful source, for reference the grand canyon is the Colorado river basin and was carved mainly by flowing water.

2006-12-14 12:53:13 · answer #2 · answered by Brian K² 6 · 0 0

Water is the most powerful and useful source on Earth.

2006-12-13 19:10:59 · answer #3 · answered by LADY ~ 3 · 1 0

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