Across
- 3. when eroded material is carried and dumped in a new location.
- 5. Unwanted organism that directly or indirectly interferes with human activities.
- 6. the ability to survive exposure to a particular pesticide
- 8. soil with an even amount of clay, silt and sand.
- 9. the spongy, fertile material formed by partial decomposition of organic matter.
- 13. Turning the soil to control weeds or pests
- 14. A decline in quality and productivity of soil.
- 15. Plowing perpendicular across a hill.
- 17. solid rock comprising the Earth’s crust.
- 18. pesticide that kills only the organism for which it was intended and not harm any other species
Down
- 1. Planting different crops in alternate bands.
- 2. Buildup of salt in the surface soil layers.
- 4. Level platforms cut into steep hillsides.
- 5. A chemical intended to kill insects and other organisms that damage crops.
- 7. Growing different crops from one year to the next.
- 9. each layer of soil
- 10. Rows of trees planted along edges of fields.
- 11. process that forms soil by breaking down rock and parent material.
- 12. the removal of materials from one place to another.
- 16. a pesticide that kills many different types of pests