The Great Lakes of the United States resulted from repeated glacial advances and retreats which enlarged and deepened stream valleys to form the basins of the future lakes.

Question

Quizplus · Accepted Answer

The formation of the Great Lakes is a result of repeated glacial advances and retreats during the Pleistocene era, which formed the basins of the future lakes by enlarging and deepening stream valleys.

The Great Lakes of the United States Resulted from Repeated