Answer:
The mechanism behind Plate Tectonics.
The main features of plate tectonics are:
- The Earth's surface is covered by a series of crustal plates.
- The ocean floors are continually moving, spreading from the center, sinking at the edges, and being regenerated.
- Convection currents beneath the plates move the crustal plates in different directions.
- The source of heat driving the convection currents is radioactivity deep in the Earths mantle.