processes transform the surface of the earth

Explain why components that are naturally found in air can be considered air pollutants.

How do convection currents form underwater mountains?

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.