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Video instructions and help with filling out and completing 8850 Form Regions

Instructions and Help about 8850 Form Regions

Music what's so great about the Great Lakes they're known as America's inland seas the North American Great Lakes Huron Ontario Michigan Erie and superior are so massive that they border eight states and contain 23 quadrillion litres of water that's enough to cover the land area of the contiguous United States three meters deep these vast bodies of water spanned forests grassland and wetland habitats supporting a region that's home to over 3,500 species but how did such a vast and unique geological feature come to be the story begins near the end of the last ice age over ten thousand years ago a time when the climate was warming and the glaciers that cloaked the Earth's surface began their slow retrieved these immense ice sheets carved out a series of basins those basins filled with water as the ice began to melt creating the world's largest area of freshwater lakes over time channels developed between these basins and water began to flow in an ongoing exchange that persists to this day in fact today the interconnected Great Lakes contain almost 20% of the world's supply of fresh surface water the waters journey begins in the far north of Lake Superior which is the deepest coldest and clearest of the lakes containing half the system's water Lake Superior sinks to depths of 406 metres creating a unique and diverse ecosystem that includes more than 80 fish species a given drop of water spends on average 200 years in this lake before flowing into Lake Michigan or Lake Huron linked by the straits of mackinac these two lakes are technically one to the west lies Lake Michigan the third largest of the lakes by surface area water slowly moves through its cul-de-sac shape and encounters the world's largest freshwater dunes...

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