Streams erode sediment from their banks. They pick up and transport sediments. As a stream erodes its banks, it creates a V-shaped valley (Figure above). This contrasts with the U-shaped valleys created by glaciers.
<span>Movements of tectonic plates create volcanoes along the plate boundaries, which erupt and form mountains.</span>
Approximately 69% of earth's water is in the form of glacial ice.
