dantes peak

I don't think that this movie was that realistic because how can theses people survive like 6 things that usually would kill anyone?  and it just didn't look real when the volcano erupted.

soil

the reason that the soil in the dust bowl was not able to sustain plants was because the wind took all of the top soil off and then all that was left was the subsoil and the subsoil is not as rich with necessary things as the topsoil was.

mass movement

a glacier would be an example of mass movement because it picks up a lot of the dirt and rocks off of whatever it is on and it carries it to the ocean and it falls there.