Erosion is the process by which the surface of the Earth gets worn down. Erosion can be caused by natural elements such as wind and glacial ice. But anyone who has ever seen a picture of the Grand Canyon knows that nothing beats the slow steady movement of water when it comes to changing the Earth.
Layer B would 'be'(get it??) would be the oldest of the two because it came before layer D. The second part to the question I don't understand.
Answer:Arizona they have crazy earthquakes
