Most canyons are formed by flowing rivers through erosion over long periods of time, and smithfield Canyon, a deep gorge through the mountains, dominates the view to the west. Given these facts, what are formed by flowing rivers through erosion over long periods of time. among the following options:
- streams
 - soft soil
 - patch reefs
 - flooding
 - Sediment
 - seas
 - deep gorges
 - wildfires


 

       deep gorges  