Across
- 6. made of elements
- 7. fossil of sea animal
- 8. Large reptile that lived millions of years ago
- 9. proof something happened
- 10. remains of very old life
- 14. scientist that studies fossils
- 16. record of the past
Down
- 1. living thing that grows in dirt
- 2. rot over time
- 3. copy of a shape
- 4. mark made on hard surface
- 5. mark left by foot
- 7. hard tree sap
- 8. break down by nature
- 11. scientist that studies rocks
- 12. repeated shapes
- 13. Changed over time
- 15. sand that lays in layers