Conservation
Across
- 3. animals are known as
- 4. to keep unchanged
- 6. helped create America's National Parks
- 8. also know as the atmosphere
- 10. no longer found on this planet
- 11. also known as ecosystem
- 13. a scientist who studies nature
- 16. living things that are the same
- 17. 26th President
Down
- 1. takes 100 years to decompose
- 2. to move from one place to another
- 3. a person who works to protect the environment
- 4. plants as known as
- 5. someone who travels to find new places
- 7. the area where all living things live
- 9. all living things
- 12. wood, oil, air, soil, are examples of this word
- 14. to protect the environment from harm or change
- 15. to break down