Across
- 2. Any physical matter that is obtained or made from plants, animals, or the ground.
- 6. An increase in the average temperature of the Earth's surface.
- 8. The contamination of the environment with subsidences that are harmful to life.
- 11. The natural process that occurs when certain gases in the atmosphere absorb and reradiate thermal energy from the Sun
- 13. Any change in Earth's climate including Global Trends in warming cooling precipitation wind directions and other related measures.
- 14. The mix of both solid and liquid particles in the air.
- 17. The removal of large areas of forests for human purposes.
Down
- 1. A process in which mind land is restored with soil and replanted with vegetation.
- 3. The contentment of air by harmful substances including gases and smoke.
- 4. A gas in the atmosphere that absorbs earth's outgoing infrared radiation
- 5. Air pollution that forms when interaction between chemicals in the air and sunlight.
- 7. An area of permeable sediment or rock that holds significant amounts of water.
- 9. The careful use of Earth's material to reduce damage of the environment.
- 10. The development of towns and cities on previously natural areas.
- 12. Precipitation that has a lower pH than that of normal rain water.
- 15. Process of planting trees to replace trees that have been cut or burnt down.
- 16. The loss of color and corals that occurs when stress corals expel the colorful algae that lives in them.