Across
- 4. building cities where vegetation and forests once were
- 7. process that consumers use to react glucose and oxygen to produce water and release carbon dioxide
- 10. all of the rock at and below Earth's surface
- 11. remains of organisms that have been buried, undergone major heat and pressure that have become either coal, oil or natural gas
- 12. when a biotic organisms decomposes; releases carbon dioxide into the atmosphere
- 13. process of greenhouse gases surrounding Earth trapping the Sun's heat in the atmosphere
- 14. elimination of forest and vegetation in an area
- 15. what is the main source of releasing carbon into the atmosphere?
- 17. preserved remains of an organism that has been trapped with its carbon in rock or petrified form
- 18. what is put into the ocean, causing a drastic change in salinity and density when a glacier melts?
- 20. what are responsible for moving warm water around the Earth?
Down
- 1. what is the largest carbon sink?
- 2. consists of all life on Earth, underground and in the atmosphere
- 3. living things that eat other living things
- 5. process that producers use to react carbon dioxide and water to produce glucose and release oxygen
- 6. asteroids hitting the Earth would cause melted rock and also a large dust cloud that would block sunlight and cause Earth's temperatures to _________?
- 8. living things that make their own food through photosynthesis
- 9. when a volcano erupts, carbon dioxide and ash get __________ into the atmosphere
- 16. a thin layer of gases surrounding Earth
- 19. more greenhouse gases will cause Earth's temperatures to become __________ over time
