Across
- 3. To do one thing well.
- 5. The "New Stone Age."
- 7. The "Old Stone Age"
- 9. A long period of time
- 11. farming
- 12. An object used to help a person accomplish a task.
- 13. People who move from place to place.
Down
- 1. The use of tools and skills to meet human needs
- 2. human life in cities, with systems.
- 4. training living things for human use
- 6. A time before there was writing.
- 8. To move to a new place.
- 10. An extra supply of something.
