Across
- 3. dinosaur age
- 4. continental plates formed
- 6. rate of decay
- 9. age by cutting rock slices
- 10. age using radioactive dating 2 words
- 11. inside rocks are older
Down
- 1. current era
- 2. finding newer and older 2 words
- 5. first life
- 7. bones set in soil
- 8. the bottom is older