Across
- 2. shallow basins containing salt
- 4. crack in the Earth's crust
- 5. an excess of salt in soil or water
- 6. a level below which the earth is saturated
- 9. clearing of large areas of land
- 10. land suitable for growing crops
- 12. underground water between nonporous rocks
- 15. whose deep roots can reduce salinity
- 16. rich soil formed from breakdown of organic matter
- 17. large variety of fauna and flora
- 18. the environment with its living organisms
- 19. unsustainable loss of ground cover caused by this land management practice
- 22. whose basin is most affected by salinity
- 23. flowing water concentrates in shallow channels
- 24. layers of of soil that contain most of the nutrients
- 25. the natural slope or shape of the land
Down
- 1. salt permanently encrusts surface of the land
- 3. something that can be kept going
- 4. land left unploughed for a season or longer
- 7. a resource of value
- 8. replanting areas cleared of trees
- 11. area of land covered by water for some time at least
- 13. an area of land drained by a river
- 14. river mammal critically endangered by 3 Gorges Dam
- 20. whose burrows can cause tunnel erosion
- 21. crop management that can cause watertable to rise