Most canyons are formed by flowing rivers through erosion over long periods of time.
Geological erosion is natural occurring erosion over long periods of time.
Most canyons are formed by flowing rivers through geological erosion.
Most canyons are formed by rivers flowing and what type of erosion?
[1] forces
[2] mechanical
[3] uncontrolled
[4] geological
[5] Water expanding
[6] flooding
[7] thrust
[8] barrel-shaped