| A | B |
|---|
| Hominid | a human or human-like creature that walks on two feet. |
| Continent | one of the seven large landmasses of Earth. |
| Landform | a naturally formed feature of Earth's land surface. |
| Climate | the pattern of weather conditions in a certain location over a long period of time. |
| Hunter-gatherer | person who obtains food by hunting animals and gathering plants, and moves when food becomes scarce. |
| Nomad | a person who moves from place to place. |
| Migration | the act of moving from one place to settle in another. |
| Domesticate | to grow and tend wild plants or animals. |
| Agriculture | planting of seeds to grow crops. |
| Irrigation | the watering of crops. |
| Surplus | an amount of a good that is in excess of what is needed for survival. |
| Specialization | a skill in a particular work. |
| Government | ways of creating order and offering leadership. |
