title: EU struggles with ozone and acid deposition.
mesh_terms: D015258:Acid Rain; D004787:Environmental Pollution / Q000331:legislation & jurisprudence / Q000517:prevention & control*; D005060:Europe; D006801:Humans; D010083:Oxidants, Photochemical / Q000009:adverse effects* / Q000032:analysis; D010126:Ozone / Q000009:adverse effects* / Q000032:analysis; D011050:Policy Making; D011640:Public Policy
chemical_list: D015258:Acid Rain; D010083:Oxidants, Photochemical; D010126:Ozone