TONY CRADDOCK / SCIENCE PHOTO LIBRARY TONY CRADDOCK / SCIENCE PHOTO LIBRARY
Acid rain damage. View of conifer trees in Bavaria, killed by acid rain. Acid rain results from airborne pollutants such as sulphur dioxide and nitrogen oxides. These react with the water in the atmosphere to form solutions of acids, such as sulphuric and nitric acid. These acids later return to Earth in rain. The acidification of soils has a very damaging effect on conifers, and may affect fish in freshwater lakes.
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