Across
- 3. Shortage of food
- 7. the cultivation of aquatic plants for food
- 10. genetically modified organism.
- 12. Saturation of soil
- 14. Food produced per unit of land
- 15. Cultivation of a single crop
- 16. Growing two or more crops in proximity
- 19. PH greater than 7
- 22. removal of trees and wildlife.
- 23. dead plants and trees
- 24. Growing multiple crops at the same time.
Down
- 1. outermost layer of soil
- 2. When topsoil fall by 10%
- 4. works to conserve land.
- 5. urban areas spreading into rural area
- 6. allows water to flow underground
- 8. Fertile soil of clay and sand
- 9. Overuse of pesticides
- 11. damaging grassland
- 13. Removing all trees in the area
- 17. excess water
- 18. burn, A controlled fire
- 20. Land preserved by federal government
- 21. loss of water of and plant nutrients from soil