Across
- 4. soil that remains above the parent rock
- 5. contains more humus that layers below it
- 9. soft rock wears away leaving hard rock
- 12. ability of water to move through soil
- 13. weather conditions over a long period of time
Down
- 1. the source of soil's mineral fragments
- 2. arrangement of soil particles
- 3. proportions of soil particles
- 6. small mineral fragments, organic material, water, and air loosely combined
- 7. nutrients in the soil
- 8. the layer of rock beneath the soil
- 10. soil blown or washed from the parent rock
- 11. organic material from decayed plants and animals