Land Degradation

5. The wearing away of the earth's surface
7. Growing cities lead to more road traffic and therefore more ____ pollution.
8. A destructive type of deforestation is slash-and-______
9. Using these to fertilise the land can contaminate water.
10. Expanding cities may lead to a loss of valuable _______ land.
11. The name for a process involving the expansion of cities.
14. Increased use of machinery in farming, or ____________, can cause land degradation.
15. A method of deforestation is ______ cutting
17. Landscape most at risk from deforestation
18. Farming can cause erosion as _______ can eat groundcover and expose the soil
20. County experiencing highest rate of deforestation
21. This farming process breaks up the soil and exposes it to erosion.
23. Herbicides used to kill ________ can contaminate water.
24. Cutting down trees causes erosion as the _______ hold the soil together

1. Trees can act as ________________ to prevent erosion by wind.
2. The cutting down of forests
3. Excessive eating of grasses and other green plants by cattle
4. Farmers can ______ trees to prevent erosion.
6. Growing cities can lead to contamination of ______ sources, such as lakes and rivers.
12. The loss of productivity and sustainability of the land is land _____________.
13. A type of erosion causing dust storms
16. Spraying these chemicals to kill pests can contaminate water.
19. The top layer of soil
22. Type of erosion leading to channels in the land