Across
- 2. A model that show how food chains in an ecosystem are linked
- 5. Circulation of nitrogen from air to soil to organisms and back
- 6. Giant sheets of ice
- 8. Layer of gases surrounding the earth
- 11. All of Earth's living things
- 14. Living things that take in groundwater through their roots
- 16. Includes the solid & molten rock and other landforms
- 18. Process when water is evaporating from the leaves of plants
- 19. When water changes from liquid to gas by water vapor
- 20. Water that falls from clouds over land and water
- 21. Models a series of feeding relationships among organisms in an ecosystem
- 23. Yellowstone is home to many hot springs or ______
- 24. Continuous movement of water between Earth's surface and air
- 25. Rain that flows over Earth's surface and gathers in bodies of water
Down
- 1. A landform which can erupt, part of geosphere
- 3. Plants take in carbon and give off _______
- 4. A model of an entire ecosystem on a smaller scale
- 7. Oxygen-_______ cycle= circulation of oxygen and carbon dioxide gas
- 9. The base of all food chains
- 10. When gas changes to a liquid
- 12. A waste product produced by all living things when energy is used
- 13. Made up of Earth's liquid and solid water
- 15. All food chains end with these
- 16. Water that soaks into the ground and moves through cracks and spaces
- 17. Energy source for the water cycle
- 22. Most of Earth's water exists as this