Across
- 4. mixture of weathered rock and fragment, decayed organic matter, mineral fragments ,water, and air
- 6. mechanical or chemical surface process that break rock into smaller and smaller pieces
- 7. dark layered , decayed organic matter that supplies nutrients to plants and is found mainly in thee topsoil
- 8. method for reducing soil erosion
- 10. twigs ,leaves,and other organic matter that help prevent erosion and hold water and may eventually be changed in to humus by decomposing organisms
- 11. average weather pattern in an area over a long period of time can be classified by temperate ,humidity , precipitation ,and vegetation
- 12. each layer in a soil profile A(top layer of soil) horizon B (middle layer)and horizon layer C (bottom layer)
- 14. physical processes that break rock apart with out changing it changing its chemical make up
- 15. farming method used to reduce erosion on steep slopes
Down
- 1. removal of minerals that have been dissolved in water
- 2. vertical section of soil layers ,each of which is a horizons
- 3. planting along the natural contours of the land to reduce soil erosion
- 5. occurs when chemical reactions dissolve the minerals in the rocks or change them into different minerals
- 9. mechanical weathering process that occurs when water freezes in the cracks of rocks and expands and ,causing rocks to break apart
- 13. chemical weathering process that occurs when some minerals are exposed to oxygen and water over time