Across
- 3. Chemicals and wastes that poison the land, air and water.
- 5. A pooling of water that collects underground.
- 8. A chemical compound used as a disinfectant in waste water treatment plants and swimming pools to kill bacteria.
- 9. To use less of something.
- 10. A mixture of decayed plant materials that is used to fertilize soil.
Down
- 1. A condition that causes difficulty breathing.
- 2. All the conditions, both natural and man-made, in which people live.
- 4. A large area that is used to dump and bury garbage.
- 6. To collect used materials to make into new things.
- 7. To use something again.
- 11. Air pollution that contains a mixture of fog and smoke.