Across
- 1. Human existence
- 3. People who move from place to place based on there basic needs
- 4. an object used to help a person to accomplish something
- 6. to do one thing well
- 9. an extra supply of something
- 10. the training of plants and animals to make them useful to humans
- 11. farming
Down
- 2. the use of skills and tools to meet human needs
- 3. "New stone age"
- 5. a long period of time
- 7. "Old stone Age"
- 8. the time before writing