Across
- 3. outside organism disrupting an ecosystem
- 5. any drinkable non salted water
- 7. fish farms
- 9. added greenhouse gases increasing Earth temperature
- 11. used to kill plant invaders
- 12. diverse shallow water aquatic ecosystem
- 13. happening quickly & limiting resources
- 17. human tree removal
- 19. fossil fuel leaked into oceans
- 20. improved farming equipment/techniques
Down
- 1. lead to increase in fossil fuel usage
- 2. trap heat
- 4. famous plastic debris "island"
- 6. produced from splitting uranium
- 8. taking fish too quickly
- 10. considered worst greenhouse gas
- 11. killing or exploiting an animal illegally
- 14. human/nature combined massive soil erosion
- 15. breaking rock to release natural gas
- 16. underground or surface extraction of resources
- 18. caused by unattended campfires, sun, lightning