A river forms a canyon over time as shown in the diagram. Canyon
River
-River
Year 2,000,000
Year 1
How did the river cause the canyon to form?
O A. The motion of water compacted soil until it became sedimentary rock.
OB. The motion of water wore away and transported rock away from the area.
O C. The motion of water prevented rock layers from forming beneath the water.
OD. The motion of water prevented plants and animals from forming the land in the river bed.