Across
- 1. the type enviroment in which a group normally lives
- 2. the way something is settled
- 3. a system of organisms with their physical enviroment
- 5. human made space and which people live,work and recreate
- 7. a line drawn on a map connecting points of equal heights
- 12. the preservation of the enviroment and of natural resources
- 13. the air around earth
Down
- 1. the watery layer of earth's surface
- 4. the gradual transformation of habitable land into desert
- 6. a representation of a region of the earth
- 8. the solid part of earth consisting of the crust and outer mantle
- 9. the atmosphere of the earth where living organisms exist
- 10. in imminent danger of extinction
- 11. no longer existence
- 14. involing or having the nature of space