Across
- 2. to move to a new place
- 4. long periods of freezing weather
- 7. an early ancestor of humans
- 8. the new Stone age; when people started tools to create fire and use tools such as saws and drills
- 10. the process of changing plants or animals to make them more useful to humans
- 12. the middle of the Stone age; when they started using more small and complex tools
Down
- 1. the time before there was writing
- 3. a stripe of land connecting two continents
- 5. a relative who lived In the past
- 6. huge stone monuments
- 9. people who hunt animals and gather wild plants,seeds,fruits,and nuts to survive
- 11. the first part of the Stone age ; when people just started using Stone tools