What is a solstice? describe how the earth’s solstices play a role in the seasons we experience each year.

Where does the availability of water pose the greatest problem

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.

Explain the value of statistics and other data to positive economics and to normative economics