The movement of tectonic plates is inferred by many scientists to be driven by A) solidification in the lithosphere B) density differences in the troposphere C) convection currents in the asthenosphere D) tidal motions in the hydrosphere

It is c. naturally in the environment

Geothermic gradient is the rate of increasing temperature with respect to increasing the depth in the earths interior. away from tech tonic plates boundaries, it is about 25-40 c/km (72-87 degrees f/mi) of depth near the surface in most of the world.

Don’t use up to much of them it leads to pollution