If a slowly running stream in the hydrosphere runs down off a mountain and passes over a plain, which of the following shows how
the surface of the earth might change over a long period of time? A. a canyon will form
B. a plateau will form
C. there will be no change
D. an ocean will form
The question says how the surface MIGHT change over a long period of time so that's why I wouldn't say option C, and that's how canyons are formed if I'm not mistaken.
