What are the structure and composition of the atmosphere?

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.

What type of aid does nigeria receive? short term, tied, voluntary, bilateral, multilateral or long-term?

Which layer surrounds the center of the earth? a: crust b: core c: mantle