Across
- 4. All air is part of this sphere
- 5. Main gas in the atmosphere
- 6. Underground lava
- 10. Number of spheres on earth
- 11. Examples of _____ include deserts, forests, rainforests, and grasslands
- 12. All living organisms are part of this sphere
- 13. All earth is part of this sphere
Down
- 1. All water is part of this sphere
- 2. Another name for the geosphere
- 3. Layer of the earth split into two sections
- 7. Thickest layer of the earth
- 8. Layer that protects the earth from harmful sun rays
- 9. Thinnest layer of the earth