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What’s so great about the Great Lakes? - Cheri Dobbs and Jennifer Gabrys

TED-Ed Lesson: The North American Great Lakes — Huron, Ontario, Michigan, Erie, and Superior — are so big that they border 8 states and contain 23 quadrillion liters of water. They span forest, grassland, and wetland habitats, supporting a region that’s home to 3,500 species. But how did such a vast…

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TED Ed

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