The Rolling Plains ecoregion lies west of the Crosstimbers area of Texas and at elevations between 900-4000 ft. The Rolling Plai
ns is a part of the central United States Great Plains system. Like the Crosstimbers ecoregion, it has rolling hills. These topographical features are due to the several rivers that flow through this ecoregion. The rivers in the area weather and erode the land, forming __________ in this area.
Explanation: there not canyons so you can cross that off and its not the dunes nor the deltas so if you look at the picture you can tell it is the plateaus