Explanation:
♤decay of radioactive elements
♤ leftover heat from planetary formation
♤heat released as the liquid outer core solidifies near its boundary with the inner core.
The litosphere is the earth's outermost layer. This is not a whole continuous piece as its crust and topmost mantle is made up of hard and rocky outer surface and is sub divided into tectonic plates. The lithosphere stretches to about 60 miles.
Yeah I don’t think I have a good idea but I’m still
