Quebec has several problems with 1. Because of its location at the northeast corner of North America, winds from the southwest carry pollution to the 2. Acid rain has 3damaged 4 lakes and some forestlands, with maple trees the hardest hit. About half of the sulfur compounds that cause acid rain originate at power plants and industrial sites in the United States, a quarter originate in Ontario, and a quarter originate within Quebec. In 5, large parts of the St. Lawrence River are polluted by fertilizer runoff and toxic industrial discharges.