Across
- 3. a biological natural resource is:
- 4. secular geologist think age of earth: 2
- 7. more dense than the mantle
- 8. invisible protected barrier for earth
- 12. natural resource valua found (2words)
- 14. found between crust and mantle
- 15. way to conserve nonrenewable resource
- 18. perfect distance from sun (2 words)
- 20. ageing rocks to be very old (2)
- 22. belief that earth process are slow
Down
- 1. way to gather inner earth data (2)
- 2. earth's crust divisions (2 words)
- 5. thinnest layer of earth
- 6. historical geology example (2)
- 9. core is made mostly of this material
- 10. introduced uniformitarianism geology(2)
- 11. study of earth
- 13. we must protect our planet from
- 16. important for life
- 17. seasons caused by
- 19. earth's orbital shape
- 21. protects earth from harmful radiatio(2)