[Acid rain].
D000393:Air Pollutants / Q000009:adverse effects; D000397:Air Pollution / Q000009:adverse effects*; D004391:Dust / Q000009:adverse effects; D006863:Hydrogen-Ion Concentration; D011891:Rain; D012989:Soil Pollutants / Q000009:adverse effects; D014887:Weather
D000393:Air Pollutants; D004391:Dust; D012989:Soil Pollutants
Saurer Regen.