If old mountains wear down over the course of millions of years, what is one of the primary reasons that mountains still exist?
A.
New mountains are created as a result of severe weather events, such as tornadoes and hurricanes.
B.
New mountains are created from the erosion of rock and soil.
C.
New mountains are created as leaf litter builds up over millions of years.
D.
New mountains are created through volcanic activity and lithospheric plate movement.