Across
- 3. Quality Index, A scale that ranks levels of ozone and other air pollutants.
- 8. Capacity, The largest number of individuals of a given species that Earth’s resources can support and maintain for a long period of time.
- 9. Pollution, Pollution from many locations that cannot be traced.
- 10. Effect, The natural process that occurs when certain gases in the atmosphere absorb and reradiate thermal energy from the sun.
- 12. The removal of large areas of forests for human purposes.
- 13. Matter, The mix of both solid and liquid particles in the air.
Down
- 1. THe development of desert like conditions due to human activities and/or climate change.
- 2. Sprawl, The development of land for houses and other buildings near a city.
- 4. Involves planting trees to replace trees that have been burnt or cut down.
- 5. Pollution, The pollution from a single point that can be located.
- 6. All the members of a species living in a given area.
- 7. Smom, Caused when nitrogen and carbon compounds in the air react to sunlight.
- 11. Warming, An increase in Earth's average surface temperature.
- 14. Precipitation, Rain or snow or water that has a lower pH than that of normal rainwater.