The zagros mountains are located in which country? iran tunisia morocco turkey

Why are mangrove swamps an important part of the ecosystem of west africa?

Which volcanic eruption caused the most deaths

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.