Across
- 4. When there was a drought
- 6. 02
- 9. Decomposed plants and animals
- 10. Last layer of soil
- 12. Fourth layer of soil
- 13. Smallest particle
- 14. Intermediate particle
- 19. Second layer of soil
- 20. wind, water, cold, hot
Down
- 1. Animals that are alive
- 2. Name of triangle
- 3. How soil forms
- 5. Layers of soil
- 7. Top Layer of soil
- 8. Molecular reactions
- 11. Plowing
- 15. Third layer of soil
- 16. Largest particle
- 17. H20
- 18. Mixture of humus and rock particles
