Chapter 2 crossword

3. a rich fertile soil containing of water, air, silt, sand, clay,a and organic matter.
5. Planting different crops in different Felix's to let the soil stay fertile.
7. A line that connects two separate points on a map.
10. a layer of soil that differs from its neighboring soil.
12. a resource that is natural that humans use.
16. the process by which rock breaks down because of chemical changes.
18. What is happening now operated in the past to change earths surface.
19. The grinding away of rock from other rocks.
20. a thick mass of thick grass and roots.
21. plowing fields along the curves of the landscape to prevent soil loss.
22. when farmers leave the previous years dead plant's stalks on the ground to hold the soil in place.
24. A process that breaks down rock.
25. A heavier contour line on a map.
28. full of tiny little air spaces that water can seep through.
30. organic soil matter.

1. The process when things move rocks and the earths surface.
2. A difference of something from one contour line to another.
4. the conservation of soil to prevent its destruction.
6. the layer beneath topsoil.
8. A map that shows the elevation and features of an area.
9. the top layer of the soil.
11. The process in which ice forms in cracks and expands the crack.
13. a loose layer off dead plant leaves on the surface.
14. A weather when rock is physically broken.
15. How well the soil supports plant growth.
17. an event in the 1930's where soil erosion in the Great Plains caused storms of soil.
23. the chemical change in which oxidation occurs.
26. soil organisms that decompose remains of organisms and digest them.
27. loose weathered material on earths surface.
29. a solid layer beneath the soil.