Human interactions with different environments depend on human needs.
Explain how the needs of human beings
have changed over time, leading to a
change in the way humans interact with the
environment.

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.