Across
- 3. the process of erosion; the gradual destruction of something
- 4. capable of producing abundant vegetation
- 7. all the inhabitants of a certain area
- 9. a greenhouse gas that is prone to photochemical smog and is a pollutant
- 12. caused by the chemical action of sunlight
- 15. rainfall made acidic by atmospheric pollution
- 16. fuels a natural fuel such as coal or gas
- 17. a substance that pollutes something
- 18. the supply of water to land or crops using channels
- 19. help, use less of, protect from harm
Down
- 1. a substance used for destroying insects
- 2. an event of an area in the 1930s affected by severe soil erosion
- 5. the draining away of water
- 6. fog combined with atmospheric pollutants
- 8. the science or practice of farming
- 10. the total amount of living material found in an environment
- 11. water held underground in soil or rock
- 13. the process of turning liquid into water vapor
- 14. the percent of pollution that comes from transportation