Across
- 3. leaves on top of dirt or wood ,plants,& animals
- 5. soil method of conversation plowing
- 6. a thick layer of grass roots and wood
- 7. was operated in the past to change earths surface
- 8. process of breaking rocks through chemical change
- 12. the (A) horizon
- 15. the grinding away of rock from other rocks
- 17. a map that shows a type of area
- 18. the process when things move weathered rock and soil
- 20. a process that breaks down rock
- 22. rich fertil soil
- 23. dark colored organic
- 24. process of breaking down rocks when water freezes and expands
- 26. solid layer of rock a (C) horizon
- 27. a heavier contour line on a map
- 28. mixture of rocks sand and other minerals
- 29. plowing fields curves on a slope
Down
- 1. a line that connects 2 separate points on a map
- 2. a chemical change such as forming rust
- 4. a weather when rock is physically broken
- 6. the (B) horizon
- 9. a difference of something from one contour line to another
- 10. any envoirmental resources
- 11. soil organism that breaks down other organis
- 13. management of soil
- 14. how measure of soil support plant growth
- 16. (A,B,C)
- 19. characteristc of material like conceeded air space where water runs through
- 21. the planting different seeds
- 25. area of Great Plains with erosion