Across
- 2. A Resource earth provides
- 4. the process of removing salt from seawater
- 6. a rock or boulder that differs from the surrounding rock and is believed to have been brought from a distance by glacial action.
- 7. natural resource which will replenish to replace the portion depleted by usage
- 9. a naturally occurring solid material from which a metal or valuable mineral
- 10. a natural resource that cannot be readily replaced by natural means
- 12. situations in which building occupants experience acute illness
- 13. a substance that pollutes something
- 14. solid rock underlying loose deposits such as soil or alluvium.
Down
- 1. the amount of a certain resource that can be harvested or obtained without causing depletion
- 3. a material or structure formed from a loosely compacted mass of fragments or particles.
- 4. the process by which fertile land becomes desert
- 5. the commercially valueless material in which ore is found
- 8. of or found in fresh water
- 11. A substance that pollutes the air