| A | B |
| geography | the study of the world and the people and things that live there |
| landform | a feature on the surface of the land |
| plateau | a high steep-sided area rising above the surrounding land |
| climate | the type of weather a place has over a long period of time |
| equator | the imaginary line around the middle of the earth |
| capital resource | a tool, machine, or buiding that people use to produce goods and services |
| human resource | people and the skills and knowledge they bring to their work |
| scarcity | not having as much of something as people would like |
| opportunity cost | the thing you give up when you decide to do or have something else |
| conservation | the protection and wise use of natural resources |
| region | an area that has one or more features in common |
| economy | the system people use to produce goods and services |
| specialization | the result of people making the goods they are best able to produce with the resource they have |
| consumer | someone who buys goods and services |
| trade | the buying and selling of goods |
| environment | the surroundings in which people, plants, and animals live |
| longitude | distance east and west of the prime meridian, measured in degrees |
| latitude | distance north and south of the equator, measured in degrees |