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dážď kyslý
Subject h. dážď kyslý Subject h. Acid Rain English X references Rain, Acid Scope note in English Acidic water usually pH 2.5 to 4.5, which poisons the ecosystem and adversely affects plants, fishes, and mammals. It is caused by industrial pollutants, mainly sulfur oxides and nitrogen oxides, emitted into the atmosphere and returning to earth in the form of acidic rain water. 
subject heading
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