Acid rain: a threat to community health.
D000393:Air Pollutants / Q000009:adverse effects*; D004782:Environmental Health; D006801:Humans; D011891:Rain; D013458:Sulfur Dioxide / Q000009:adverse effects; D014877:Water Pollution, Chemical; D014887:Weather
D000393:Air Pollutants; D013458:Sulfur Dioxide