Across
- 2. a natural fuel such as coal or gas.
- 4. is the worldwide sum of all ecosystems.
- 6. layer of water at Earth’s surface.
- 8. state of physical balance.
- 9. CO2
- 11. air that surrounds the earth.
- 13. water changes from a liquid to gas/vapor
- 16. rain or snow that falls to the ground.
- 18. earths large plates.
- 21. added to soil to increase its fertility.
- 22. a dark, fine-grained volcanic rock.
- 23. no light hits this ocean zone.
- 24. geology that studies the Earth's water.
- 26. sunrays hit this ocean zone.
- 28. harmful materials into the environment.
- 31. smallest of the five oceans.
- 32. second-largest of five oceans
- 34. the spreading of something more widely.
- 35. visible mass of condensed water vapor.
Down
- 1. is a persistent body of dense ice.
- 3. the rigid outer part of the earth.
- 5. energy of the sun.
- 7. collection of organisms found in water.
- 10. also known as "ocean floor".
- 12. opening in the crust through lava.
- 14. energy as electromagnetic waves.
- 15. hardly any light hit this ocean zone.
- 17. largest and deepest of the 5 oceans.
- 19. process of wearing or being worn.
- 20. most abundant substance on earth.
- 25. circulates between the earth's oceans
- 27. uppermost layer of the oceanic portion.
- 29. A force toward the center of the earth.
- 30. process of eroding.
- 33. the draining away of water.