Across
- 7. Depletion of natural resources
- 8. The impact humans leave on an environment
- 12. The study of the natural world and how we affect it.
- 13. Name one nonrenewable source
- 14. Exceeding max capacity
- 15. Wrote Sand county Almanac about management about wildlife
- 16. Name one thing pollution causes
- 18. name one renewable source
- 20. Vaccines,and anti-venom
- 21. Variety of life in nature
Down
- 1. To keep the ecosystem in balance
- 2. Name one thing Overpopulation causes
- 3. Spilling contaminants into nature
- 4. First directer of the U.S. Forest service
- 5. protect nature from danger
- 6. Manage resources
- 9. wrote a book about pesticides.
- 10. Nature writer and established Yosemite National park
- 11. made a national wildlife reserve for the Brown pelican
- 17. Benefiting off a natural resource (Poaching)
- 19. pleasing to look at