Environment

2. The whole mass of air that surrounds the Earth.
4. Gases and vapor (usually harmful).
6. Material that is left over or that is unwanted after something has been made, done, used, etc..
9. Containing poisonous substances
11. restored or replaced by natural processes.

1. The continuous absence of rain, thus causing the land to dry up.
3. Polluted air which is a mixture of smoke and fog.
5. A system in which waste materials are buried under the ground. a region with particular weather patterns or conditions.
7. The gradual destruction of something by natural forces(such as water, wind, or ice): the process by which something is eroded or worn away.
8. Produced by or using the sun's light or heat.
10. To send (used newspapers, bottles, cans, etc.) to a place where they are made into something new.