Across
- 3. rain,any form of precipitation with acidic components,
- 5. grazing which causes damage to grassland.
- 7. gradual caving in or sinking of an area of land
- 9. facilities of a country of regions such as roads,bridges and sewers
- 10. extraction of metal from its ore by a process involving heating and melting.
- 11. islands ,urbanized areas that experience higher temperatures than outlying areas.
Down
- 1. unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level.
- 2. action or process of making or becoming acidic.
- 4. action of clearing a wide area of trees.
- 5. mineral, natural rock or sediment that contains one or more valuable minerals
- 6. shock, shifting cells directly from alkaline conditions to acid conditions.
- 8. is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties