MavicaNET - Catalogue de recherche multilingue
Statistique: liens: 359084, Catégories: 31818, langues supportées: 30
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Acid Rain
Despite progress in recent years, acid rain remains a significant environmental and economic concern for many regions
of Canada. This section explains what acid rain is, where it comes from, and what it's effects are.
[eng]
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Acid Rain
Unpolluted rain has a pH of roughly 5.6, but
there are natural variations. Acid rain and snow, with a pH of about 4.4, has fallen in southern Norway for many years, causing serious environmental damage in many areas. History of the problem. [eng]
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