Across
- 4. unweathered bedrock
- 5. detachment of fertile topsoil
- 6. a mixture of organic matter (humus), rock partials, water and air
- 11. plants absorb energy by gathering ____
- 13. bedrock for which the soil was formed
- 14. subsoil
- 15. weathering: the physical breakdown of rocks
- 18. topsoil
- 19. organic material
- 20. plants get water from their ____
Down
- 1. largest particle - does not hold water
- 2. the greatest ecological disaster
- 3. plowing
- 7. solid unweathered rock under the soil composition
- 8. weathering: the nature of rocks being changed
- 9. partial decomposition of plants and animals
- 10. obtained by water and carbon dioxide
- 12. the movement and filtering of water through porous materials
- 16. smallest particle - holds water
- 17. parent material