Why does climate, location, and physical features impact human settlement?

This word for a bug or malfunction was popularized in the 1962 book into orbit by the mercury astronauts

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

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.