see happening when streams cut through rocks is the same erosional process that must have caused the massive erosion that produced the Grand Canyon by the Colorado River.
(see; happening; T:when streams cut through rocks) (streams; cut; ) (see happening when streams cut through rocks; is; the same erosional process that must have caused the massive erosion) (the same erosional process; must have caused; the massive erosion that produced the Grand Canyon by the Colorado River) (the massive erosion; produced; the Grand Canyon)
see streams see happening when streams cut through rocks the same erosional process the massive erosion
happening cut is must have caused produced
T:when streams cut through rocks
the same erosional process that must have caused the massive erosion
the massive erosion that produced the Grand Canyon by the Colorado River
the Grand Canyon