Across
- 11. Variety of life in an ecosystem
- 13. Park managed by a state for recreation and conservation
- 17. Benefits humans get from ecosystems
- 18. Group of similar organisms that can reproduce
- 19. U.S. law protecting endangered species
- 20. Current time period influenced heavily by humans
- 21. Tourism focused on natural environments
- 23. Variety of roles organisms play in an ecosystem
- 24. Repairing damaged ecosystems
- 26. Protected land for wildlife habitat
- 27. Change in DNA
- 28. Large federally managed forest land
Down
- 1. Protected natural area in Illinois
- 2. Trait that helps an organism survive
- 3. Natural extinction rate without human influence
- 4. Large event where many species go extinct
- 5. Protected forest land (Illinois system)
- 6. Process where traits that help survival become more common
- 7. Local extinction of a species
- 8. International agreement protecting endangered species trade
- 9. Environmental factor that influences survival
- 10. Complete disappearance of a species from Earth
- 12. Ability to survive chemicals like pesticides or antibiotics
- 14. Formation of new species
- 15. Protecting and managing natural resources and wildlife
- 16. Species no longer exists in a particular ecosystem
- 22. Protected public land for nature and recreation
- 25. Large climate-based ecosystems