Across
- 4. explorers guide
- 5. nickname of the earth
- 7. model of the earth
- 8. half of the earth
- 10. Blue planet
- 12. evidence of past life
- 13. table land
Down
- 1. turn waste into usable materials
- 2. Earth's protective layer
- 3. Dense wet woodland
- 6. fertile land in the desert
- 9. Earth's mid line
- 11. arid land