| A | B |
|---|
| Prime Meridian | imaginary longitude line drawn through Greenwich, England |
| standard time | time system that the world delegates agreed upon |
| region | an area of the earth that is different from those in other areas |
| three parts of the earth's system | land, air, and water |
| gross national product | total value of everything produced in one year |
| cultural geography | studies the way people live in different environments |
| physical geography | studies the planet Earth and its place in the universe |
| closed system | needs no outside help to start or keep going |
| geography | the study of the Earth's surface, how the environment affects the way people live, and resources of the Earth |
| revolution | seasons of the year are caused by this |
| interdependent | when tow or more countries need each other |
| third and fourth world countries | the nations of the world that are the poorest and lack the naturaly resources to improve their condition |
| first world countries | richest and most industrialized nations of the world; they believe in free trade and capitalism |
| free trade and capitalism | first world countries believe in these |
| features of a good map | title, key, directions, scale, and grid |
| latitude lines | runs east and west; includes the equator and measures north and south distances |
| rotation on its axis | the rising and the setting of the sun is caused by this |
| Laws of ecology in Barry Commoner's book | 1) everything is connected to everything else; 2) there is no such thing as a free lunch; 3) nature knows best |
