Across
- 3. Destroys body systems, and it disturbs the ecosystems and its balance.
- 5. The impact humans have on the environment.
- 6. Author of Silent Spring.
- 7. Author of A Sand County Almanac.
- 10. The study of natural processes in the environment and how humans affect them.
- 11. manufactured products.
- 13. Management of resources
- 19. land that cannot be farmed
- 20. Benefiting from the use of resources.
- 21. Rain that is contaminated with pollutants that make the rain acidic
- 23. Solar, Geothermal, wind.
- 24. Species that are not native to an area.
- 26. The heating of the planet
- 27. keeps balance in nature
- 28. A nature writer that established Yosemite national park.
- 29. 1st director of the United States Forest Service.
Down
- 1. Coal, Petroleum, Natural gas.
- 2. The wrecking of a creature's home.
- 4. When organism numbers exceed carrying capacity.
- 8. The depletion of raw materials
- 9. Established the 1st National Wildlife Refuge.
- 12. anti-venoms and vaccines
- 14. pleasing to look at.
- 15. The destructiong of the ozone layer.
- 16. Variety of life on earth.
- 17. protection from danger
- 18. The introduction of contaminants to the environment.
- 22. food and soil.
- 25. The slow diminution of something.