what are most canyons formed by over long periods of time?
hurricanes wind tunnels dangerous forces kalenchoes flooding high populations Sediment
A B C D E F G H
Most river erosion occurs when the river is in flood.
most canyons are formed by flooding over long periods of time
what are most canyons formed by over long periods of time? (A) hurricanes (B) wind tunnels (C) dangerous (D) forces (E) kalenchoes (F) flooding (G) high populations (H) Sediment