Across
- 4. Soft sticky soil
- 6. Soil organic matter
- 8. Put away
- 10. Plant root system
- 12. Planting different crops each year
- 13. conservation Preserving soil
- 14. Farmers' friend
- 15. Solid layer of rock under the earth's surface
- 16. A plant nutrient
- 18. Dark organic material in the soil
- 19. All living things depend on this
Down
- 1. When depleted soil becomes sand
- 2. Fungal
- 3. Cultivable
- 5. Top layer of soil
- 7. Another plant nutrient
- 9. Nitrogen-fixing bacteria
- 11. United Nations Convention to Combat Desertification
- 12. All life is this
- 17. Microscopic soil worms