Across
- 3. The breaking of soil to prepare it for planting
- 7. Land mostly covered with building and roads
- 8. Any type of land use that includes forests, cropland, etc.
- 9. The spread of low density urban or suburban development outward from a dense urban core
- 12. Crops that are changed in a planned order
- 16. The deterioration of land
- 17. Growing more than one crop on the same piece of land
- 18. Cancer causing chemicals
- 21. A barrer of vegetation that reduced wind speed and protects crops
- 22. Human activities that occur on land
- 23. a naturally occurring material that is present in soil and rocks.
- 24. The increased concentration of toxic substances
- 25. The buildup of toxic substances in the bodies of organisms
Down
- 1. Cities that are several degrees warmer that surrounding areas
- 2. They requires support systems and facilities
- 4. The method of growing crops on sides of mountains on terraces built into the slope
- 5. appearing in the human population and spreading rapidly
- 6. Chemicals that harm embryos and fetuses
- 10. Any crop to cover soil for enrichment
- 11. Increased waste, industrial byproducts, noise pollution, light pollution
- 13. gas produced by the decay of naturally occurring uranium in soil and water
- 14. They are spread by human and animal contact through contaminated food and water
- 15. Vegetation and structure that covers land
- 19. Chemicals that affect the nervous system
- 20. Occurs when people move from rural areas to cities