Name three features of North America during the Last Ice Age

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Answer: 1) Glacial ice covered about two-thirds of North America. 2) Sea level was 100—120 meters lower than today. 3) Cooler and wetter climate in the southwestern United States allowed deep lakes to form within valleys of the Great Basin.
Other Answers: 4) Outwash choked river valleys, causing widespread deposition by braided streams during the early stages of glacial retreat. Wind blowing across the stream valleys swept up fine-grained sediment and deposited it in adjacent areas as loess. 5) Large lakes formed on the crust depressed by the weight of the thick Laurentide ice sheet.

Environmental & Atmospheric Sciences

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