Final answer:
Rocks deep within the Earth are moved to higher elevations through plate tectonics and volcanic activity. Most mountain ranges on Earth are a product of tectonic plate activity.
Step-by-step explanation:
Rocks deep within the Earth are moved to higher elevations through plate tectonics and volcanic activity. The earth's crust consists of a number of separate plates that move, creating earthquakes and volcanic activity. Most mountain ranges on Earth are a product of tectonic plate activity. Geological activity on a planet is the result of a hot interior, which drives the forces of volcanism and mountain building.
Learn more about Plate Tectonics