For example, most valleys were created by receding glaciers while several sandstone columns were created by ________________. When the Colorado river cut through stone cliffs, it created the Grand Canyon and the Mississippi River Delta was created by the process called ____________.
For example, most valleys were created by receding glaciers while several sandstone columns were created by erosion. When the Colorado river cut through stone cliffs, it created the Grand Canyon and the Mississippi River Delta was created by the process called sediment deposition.
