Acid rain is caused largely by super dioxide in oxide of nitrogen and made it by Industries activities such as coal burning the gases dissolve in rainwater to form acids much of this industry is based in United States but the weather export pollution north of the border between 50% and 70% of Canada acid rain come from United States who are only two at a 10% of Canada's pollution comes from Canada what conclusion can be drawn from a text a environmental issues in United States impact Canada be the United States and Canada do not share environment issues she can of pollution greatly affect the environment of the United States or D Canada Industries is the primary cause of acid rain impact in Canada