The three major environmental issues in Canada are:
1. Pollution of the Great Lakes from waste dumping, runoff, and acid rain which harms wildlife and contaminates water sources.
2. Mining in the Canadian Shield extracts minerals but leaves long-term damage to soil, water, and ecosystems. It has been linked to increased human and animal sickness.
3. Deforestation of Canada's Boreal Forest for timber and to make way for mines threatens an ancient ecosystem and endangered species. Overuse is unsustainable and causes irreversible loss of forests.