It wasn't that long ago that the north American landmass was under glaciers. There was so much water contained on the land that when it melted and drained into the oceans, the oceans rose 300ft.
It wasn't that long ago that the north American landmass was under glaciers. There was so much water contained on the land that when it melted and drained into the oceans, the oceans rose 300ft.
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