Across
- 7. Many species have become __ due to the pollution and habitat destruction.
- 9. An increase in value or worth over a period of time.
- 10. When two groups (political groups in most cases) come together to agree on something.
- 11. Besides Alaska and Hawaii, the United States are connected, they are__.
- 12. Something that prohibits growth from taking place.
- 13. Due to their low population, tigers are on the verge of__.
Down
- 1. The act of preserving and protecting something.
- 2. A disease that occurs when the body fails to produce insulin.
- 3. The different organisms that interact in an ecosystem.
- 4. Something is considered __ if everyone agrees on it.
- 5. German Shepherds and Chihuahuas belong to the same__.
- 6. Someone who supports something.
- 8. A basic reason or explanation for something.