Across
- 1. made or used by humans long ago
- 4. something used as proof
- 5. period of time before written records
- 6. scientist that studies physical materials of earth
- 7. characteristics shared by a group of people
- 10. study of how humans behave
Down
- 2. studies life in the past
- 3. hunted animals and gathered plants
- 8. to decide something
- 9. hardened remains of a living thing