Across
- 2. the wise use and preservation of resources through decreased waste
- 3. second-lowest layer of Earth's atmosphere, where the ozone layer is located and most Ultraviolet radiation is absorbed.
- 5. the natural home or environment of an animal, plant, or other organism
- 7. the lowest layer of Earth's atmosphere, closest to Earth, where nearly all weather and manmade activity occurs
- 10. Processes by which rock, sand, and soil are broken down and carried away (i.e. weathering, glaciation)
- 11. behavior that leads to the protection and reclamation of natural resources
- 13. Occurs when natural or human-induced processes decrease the future ability of land to support crops, livestock, or wild species
- 17. removal of trees faster than forests can replace themselves
- 18. natural resources that humans use to produce energy
- 19. movement of people from rural areas to cities
- 21. a measure of air or water quality express by the molecules of foreign matter as a part of a larger whole
- 22. the average weather conditions in an area over a long period of time
- 23. pollution that does not have a specific identifiable point of origin, or has many points of origin
- 24. a tiny solid suspended in air or water
- 25. fog or haze combined with smoke and other atmospheric pollutants.
- 26. natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases
- 27. A nickname for the Great Plains regions hit by drought and dust storms in the early 1930s
Down
- 1. natural materials used to make things or used by humans as food
- 4. pollution that comes from a specific site
- 6. a measure of the pollutants in the air that is used to express how clean or polluted the air is
- 8. a nonrenewable natural fuel such as coal or gas, formed in the geological past from the remains of living organisms
- 9. a layer in the stratosphere that contains a concentration of ozone sufficient to block most ultraviolet radiation from the sun
- 12. rain, sleet, or snow that contains a high concentration of acids due to pollution
- 14. the process by which fertile land becomes desert, typically as a result of drought, deforestation, or inappropriate agriculture
- 15. the situation that arises when more soil nutrients are used than the decomposers can supply
- 16. a large natural or artificial body of stored drinking water
- 20. a natural or pollution-induced phenomenon in which a body of water becomes rich in nutrients and experiences rapid growth of plants and algae