Erosion commonly dominates over deposition at the mouth of a river. Variations in the earth's orbit and tilt on its axis is proposed as the cause of glaciers advancing and retreating during an ice age. Knickpoints show up as rapids and waterfalls along a river. Braided channels are found along degradational rivers. River terraces form by degradational rivers eroding their older floodplains.
Unfractured granite is an aquiclude.
The U.S. has already used up nearly half of its known petroleum resources. Worth 2 pts. A floodplain is formed by A. erosion during flooding. D turbulent river flow. B. mass wasting along river channels.