Across
- 1. Chemicals used to kill pests
- 5. DEGRADATION- Decline in the quality of soil
- 6. Adding substances to improve soil
- 8. Animals feeding too much on plants
- 9. Lack of water affecting soil
- 10. AND BURN- Burning and clearing vegetation
- 13. Planting trees to protect soil
- 16. Careful use of water for crops
- 17. EXPANSION- Expansion of cities into farmland
- 18. Proper control of water in soil
- 20. EXHAUSTION- Loss of nutrients in the soil
- 21. Removal of minerals from the earth
Down
- 2. EROSION- Harmful chemicals affecting soil
- 3. Growing the same crop repeatedly
- 4. Cutting down trees
- 7. FARMING- Cutting across slopes to control water
- 11. Cutting steps into slopes to reduce runoff
- 12. CONSERVATION- Protection and proper use of soil
- 14. Removal of topsoil by rain or wind
- 15. REUSE- Reusing land for farming
- 19. FARMING- Planting crops in strips
- 20. EROSION- Wearing away of soil by wind or water