Across
- 3. The innermost part of the Earth
- 5. Process by which green plants and other organisms use sunlight
- 7. Community of living organisms interacting with each other
- 11. Part of the Earth between the core and the crust
- 12. The arrangement of natural and artificial physical features of an area
- 13. Molten rock beneath the Earth's surface
- 14. The rise of deep, cold, nutrient-rich water to the surface
- 16. Process by which fertile land becomes desert
- 17. A large sea wave
- 18. Frozen water part of the Earth system
- 20. The global sum of all ecosystems
Down
- 1. A seasonal wind pattern that causes heavy rains in certain regions
- 2. The solid part of the Earth
- 4. The layer of gases surrounding the Earth
- 6. Process by which particles settle out of a fluid
- 8. Ground that remains frozen for two or more consecutive years
- 9. The process through which magma and gases are expelled from the Earth's interior through volcanic eruptions
- 10. The variety of life in a particular habitat
- 15. Rigid outer layer of the Earth
- 19. A region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation