Because of the costs involved in maintaining high temperatures and pressure, nuclear is not yet a practical method for generating electrical energy.

i was thinking more like reflects green light, just not sure

i think the answer is a, hope this : )

that would be because of both gravity and friction. so     c

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods