The largest environmental problem near the Great Lakes is likely over-extraction of minerals. The Great Lakes region is known for its abundant mineral deposits, and the mining industry has historically been a significant economic activity in this area. Over-extraction of minerals can lead to various negative impacts on the environment, including degradation of water quality, destruction of habitats, and disruption of ecosystems. Additionally, mining activities can result in air and water pollution, as well as the release of toxic substances into the environment. Acid rain and the export of raw materials are also important environmental concerns in the region, but over-extraction of minerals is likely the largest problem. Dams, on the other hand, may have some environmental implications, but they are not typically associated with the Great Lakes region.
