Across
- 3. group of chemical compounds used in refrigerators
- 5. largest number of a population an environment can support
- 8. action of clearing a large area of trees
- 13. measure of human impact on environment
- 14. chemical used to kill insects and other organisms that damage crops
- 16. forms in atmosphere when gas emissions combine with water
- 17. protecting and preserving natural resources and the environment
- 18. protective layer in atmosphere that shields earth from uv radiation
- 19. convert waste into reusable material
Down
- 1. process where fertile land becomes desert due to drought or deforestation
- 2. harmful material
- 4. impact of a person or community on the environment
- 6. species who is at risk of extinction
- 7. chemical used to kill insects
- 9. increase of things living in an area
- 10. species that dies out/no longer exists
- 11. development of industries for machine production of goods
- 12. coal, oil, natural gas and other fuels that are remains of organisms
- 15. where fresh water meets salt water
- 16. raising marine and freshwater fish in ponds and underwater cages