1 results for 'acid rain'
Acid rain (en)
Air pollution
Pollutants, Precipitation, Rain
Science
> Pollution, disasters and safety
امطار حمضية (ar), مطر حمضي (ar), Pluie acide (fr), Кислотный дождь (ru), Lluvia ácida (es)
http://vocabularies.unesco.org/thesaurus/concept1215