| A | B |
|---|
| climate | the type of weather a place has over a long period of time |
| equator | the imaginary line around the middle of the Earth |
| landform | a feature on the surface of the land |
| geography | the study of the world and the people and things that live there |
| plateau | a high, steep-sided area rising above the surrounding land |
| capital resource | a tool, machine, or building that people use to produce goods and services |
| natural resource | a material from nature, such as soil or water, that people use |
| opportunity cost | the thing you give up when you decide to do or have something else |
| scarcity | not having as much of something as people would like |
| conservation | the protection and wise use of natural resources |
| human resource | people and the skills and knowledge they bring to their work |
| consumer | someone who buys goods and services |
| economy | the system people use to produce goods and services |
| specialization | when people make the goods they are best able to produce with the resources they have |
| trade | the buying and selling of goods |
| region | an area that has one or more features in common |
| ecosystem | a community of plants and animals, along with the surrounding soil, air, and water |
| environment | the surroundings in which people, plants, and animals live |
| erosion | the process by which water and wind wear away the land |
| pollution | anything that makes the soil, air, or water dirty and unhealthy |
