Possible Clues:

• Environmental woe
• Kind of precipitation caused by excess sulphur dioxide or nitrogen oxide in the air
• Deleterious precipitation
• Something consuming resources in Jersey, possibly an environmental problem
• One roughly bends back exhaust that pollutes
• A nasty fall in a ditch round Channel Islands
• One cause of deforestation
• Pollution caused by cats and dogs?
• Corrosive stuff from the sky (2 words)
• Harmful downfall