Across
- 5. a tool scientists use to visualize and understand the meaning of soil
- 7. the process of eroding by wind water and natural gasses
- 8. a substance added to soil to increase its fertility
- 10. matter that comes from a recently living organisms
- 12. the state or process of rotting/decay
- 13. material underlying geological material in which soil horizons form
- 14. The negative logarithm of hydrogen ion concentration from 0-14
Down
- 1. plowing along the contours of land in order to minimize soil erosion
- 2. wear away or change appearance of something
- 3. Pathway which a chemical substance moves through compartments of the earth
- 4. make or form sloping land to make flat areas
- 6. civilization in which different crops are sewn in alternate strips to prevent soil erosion
- 9. makes matter or manure into compost
- 11. the top layer of soil
- 15. the organic component of soil