Across
- 2. the most abundant of greenhouse gases
- 6. can be used for by humans over and over again
- 9. chemicals released into the atmosphere from industry, automobiles, etc
- 14. the circular pathway of carbon in the environment
- 17. practices that do not deplete natural resources to a high degree
- 18. the current environmental conditions in a small area
- 19. behavior that keeps the environment in mind, that are not harmful
Down
- 1. everything around us, living and nonliving
- 3. practices that are good for the environment or do not harm it
- 4. another greenhouse gas produce by many different processes
- 5. the amount of carbon a person used in a given amount of time
- 7. changes in the overall conditions on Earth
- 8. changes in the average temperature on Earth
- 10. in the atmosphere, keep the earth at a certain temperature
- 11. materials that are easily broken down in our environment
- 12. the gas layer surrounding the Earth
- 13. act of using resources sustainably
- 15. overall environmental conditions in a large area
- 16. energy sources such as oil, natural gas and coal