human
I've been trying to read up on the continental drift theory, and I'd like to know what other theories of plate tectonics exist?
assistant
Other common theories of plate tectonics include sea-floor spreading, which postulates that the ocean floor is constantly being created and expanded as new crust is formed at mid-ocean ridges and destroyed by subduction at ocean trenches; mantle convection, the process by which heat is transferred from the Earth's interior to its surface; and lithospheric plates, which explain how different sections of the Earth's crust move and interact.