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| acid rain | |||
| acid deposition; acidic precipitation | |||
| sour rainfall | |||
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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 | |||
| saurer Regen: 2 phrases in 2 subjects |
| Natural resourses and wildlife conservation | 1 |
| Statistics | 1 |
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