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]
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]