Deltas, because volcanoes are a build up of composites, glaciers are from ice melting and leaving behind composites. Deltas are when composites are washed away until there is a whole or trench.
Answer:
d. earths rotation on its axis
The answer is occluded front
Between the 1870 and 1900
Renewable: trees, air, water
Nonrenawable: coal, oil, metals