Across
- 1. found in the atmosphere
- 4. gas needed to turn into oxygen
- 10. three spheres help plants make this happen
- 11. is the hydrosphere
- 12. related to the lithosphere
- 13. part of the earth where life exists
Down
- 2. related to the hydrosphere
- 3. solid part of earth
- 5. hydrosphere helps with this particular action
- 6. water vapour
- 7. part of earth that has water
- 8. layer of gases around earth
- 9. force that attracts things to its core