In your region, what materials do humans take from the geosphere? what materials are returned to it?

Explain how a convection current in the earth is formed.

If we represent the solar system on a scale that allows us to walk from the sun to pluto in a few minutes, then a) the planets are microscopic and the stars are millions of miles away. b) the planets are the size of basketballs and the nearest stars are a few miles away. c) the planets are marble size or smaller and the nearest stars are thousands of miles away.

Political boundaries are determined by the political party in control at the time. true or false