Across
- 2. No longer in existence
- 6. Gases surrounding a planet
- 7. A system formed by a community of organisms
- 10. Where a person or thing is usually found
- 11. The water on or surrounding the planet
- 14. Human-Made
- 15. Taling socially
Down
- 1. Earth's crust, waters, and atmosphere
- 3. The crust and solid portion of the Earth
- 4. Shows different paces
- 5. Representing line on a map
- 8. Map or chart
- 9. Extension of space
- 12. Threatened by a danger
- 13. An area becomes a desert
- 16. Being settled