Across
- 1. part of the earth where living organisms are to be found
- 3. the air surronding the earth
- 5. dry land regions becoming more arid
- 7. at risk of extinction
- 9. crust of the earth
- 13. relating to space
- 14. no longer existing
Down
- 1. human made surroundings
- 2. all the water on the earths surface
- 4. conserving natural resources
- 6. a line joining points of equal elevation
- 8. a community of oranisms where they live
- 10. place where a plant or animal naturally lives
- 11. the act of settling
- 12. a plan or diogram