Across
- 2. a rule or directive made and maintained by an authority
- 4. a system in which members of an organization or society are ranked according to relative status or authority
- 5. classified under air pollution
- 6. a unit used to measure the intensity of a sound
- 7. fluorescent lamps are now classified as this
- 8. regulations containing part p
- 9. the world we live and work in
Down
- 1. is a waste treatment process that involves combustion
- 3. a common and historic means of waste disposal
- 10. the amount of space that a substance or object occupies