Mountains on Earth Often Have Sharp Peaks and Edges to Them

Multiple Choice

Mountains on Earth often have sharp peaks and edges to them, while mountains on the Moon look smooth and kind of dull in comparison. What gives the Earth's mountains their dramatically sharp shapes?

A) rocks falling from space hit the mountains and shape them
B) water and ice flow over the Earth's mountains and erode them
C) the Earth's magnetic field is responsible for all the shapes on the surface
D) earthquakes in the mountain regions break big mountains into smaller ones
E) this is an unsolved problem in science
Section 8.3: Earth's Atmosphere