Across
- 2. herders who wander endlessly looking for water
- 5. they begin in the north latitudes and blow south
- 6. great seas of sand
- 7. long periods of no rain
- 8. switching crops planted in a field
- 9. "Blue Men of the Desert"
- 11. this is happening to the Sahel
- 13. land that is tough to farm
- 14. this increase when trees are removed
- 16. world's largest desert
- 17. gravel-covered plains
- 18. used instead of wood for a cooking fuel
- 19. animal that is built for the desert
Down
- 1. high, rock-covered flatlands
- 3. grown near oasis for a profit
- 4. a mix of grassland, acacia trees, baobab trees
- 10. need to protect crops from weather
- 12. dry riverbeds
- 15. most important desert plant