Across
- 1. Native to an area
- 4. A species that no longer exists
- 8. The movement from one habitat to another, seasonal
- 10. A home to specific organisms
- 11. The process of assisting the recovery of an ecosystem
- 13. A species that is likely to become endangered
- 16. A group of cardinals
- 17. All of the living things in a specific area
- 18. Law to regulate air emissions
Down
- 2. The Mechanism for evolution
- 3. A species is one that threatens the environment and is nonnative
- 5. President that made Earth day
- 6. Amphibian
- 7. The variety of living things
- 9. Populations that live together
- 12. Cute marine or freshwater mammal
- 14. A species that is facing extinction
- 15. Period of below average rainfall