Across
- 3. a natural habitat is no longer able to support its native species.______
- 6. the introduction of harmful materials into the environment____
- 7. global average temperature caused by humans burning fossil fuels____
- 9. desert, typically as a result of drought, deforestation, or inappropriate agriculture._____
- 12. the total amount of greenhouse gases (including carbon dioxide and methane)____
- 13. gases in the earth's atmosphere that trap heat._____
- 15. the increase in the proportion of people living in towns and cities______
Down
- 1. comes from unlimited, the sun, tides, and wind.____
- 2. natural process by which the content of the soil becomes more acidic______
- 4. the ability to maintain or support a process continuously over time_____
- 5. the long-term regional or global average of temperature___
- 8. area where other organisms work together ____
- 10. the purposeful clearing of forested land.______
- 11. careful preservation and protection of something______
- 14. Earthen materials are worn away and transported by natural forces such as wind or water._____