Across
- 3. habitats (biosphere)
- 6. ice caps (hydrosphere)
- 7. The layer of gases surrounding Earth
- 8. Cycle: Links lithosphere with other systems
- 10. (0-10 km): Where weather occurs
- 14. (10-50 km): Contains protective ozone layer
- 16. All water on Earth (oceans, lakes, rivers, groundwater)
Down
- 1. Result of atmosphere-hydrosphere interaction
- 2. All living things and their environments
- 4. erosion (lithosphere)
- 5. Earth's solid outer layer (crust and upper mantle)
- 9. (50-80 km): Where meteors burn up
- 11. temperatures (atmosphere)
- 12. Cycle: Connects hydrosphere, atmosphere, and biosphere
- 13. Cycle: Involves all four systems
- 15. (80-700 km): Very hot, where auroras occur