Across
- 4. too much of this, caused by people living close together, can lead to the spread of disease
- 5. and extra supply of something
- 6. the process of modifying the environment to make it more useful to humans
- 7. the Fertile ___ of North Africa in the Middle East is where agriculture first began
- 8. small bands of people who moved around in search of herds were called ____ gatherers
Down
- 1. first settlements formed when humans began to domesticate
- 2. examples are roping livestock, taming dogs, and selectively breeding vegetables
- 3. the Agricultural Revolution is also know as the ____ Revolution