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| acid rain | |||
| acid rain Rain having a pH less than 5.6. The acidity results from chemical reactions occurring when water, sulphur dioxide, and nitrogen oxides, generally released by industrial processes, are chemically transformed into sulphuric and nitric acids; acid deposition; acidic precipitation | |||
| lluvia ácida: 2 phrases in 1 subject |
| Environment | 2 |