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glaciers are destructive all glaciers in the world move southward the Mississippi-Missouri-Ohio system is larger than it was before the Ice Age the Great Lakes are now smaller than they were before the Ice Age
glaciers are destructive all glaciers in the world move southward the Mississippi-Missouri-Ohio system is larger than it was before the Ice Age the Great Lakes are now smaller than they were before the Ice Age
thought … great thought … greatest regarded … great regarded … greatest
the Ice Age was a long period of time great glaciers covered North America many years ago changes in climate helped to melt the glaciers how glaciers changed North America
1,000 years 100 years 1,000,000 years 11,000 years
the Ice Age was a long period of time great glaciers covered North America many years ago changes in climate helped to melt the glaciers how glaciers changed North America
are two miles thick form frozen lakes are a million years old move and slide
are two miles thick form frozen lakes are a million years old move and slide
1,000 years 100 years 1,000,000 years 11,000 years
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