Possible Clues:

• Corrosive stuff from the sky (2 words)
• Pollution caused by cats and dogs?
• Number to help out with sound rule for pollution
• One cause of deforestation
• Something consuming resources in Jersey, possibly an environmental problem
• Pollution caused by a Channel Islands sewer
• The more pollution rises, the more this falls
• It's polluted in a Channel Islands sewer
• Pollution during a downpour perhaps
• A group of detectives managed to include one with precipitation being polluted