| A | B |
|---|
| agriculture | the raising of crops and animals for human use |
| domesticate | to train plants or animals to be useful to people |
| surplus | an extra supply of something, ex. food |
| specialization | training to do a particular kind of work |
| civilization | a culture that has developed systems of specialization, religion, learning, and government |
| trade | the exchange of goods and services |
| slash and burn | a farming method used to provide ash-enriched soil for planting crops |
| erosion | the gradual wearing away of soil and rock by wind, glaciers, or water |
| terrace | a level platform of earth built into a hillside |
| revolution | any sudden or very great change |
