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Author Question: Name three features of North America during the Last Ice Age. What will be an ideal ... (Read 7 times)

WhattoUnderstand

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on: Jul 16, 2018
Name three features of North America during the Last Ice Age.
 
  What will be an ideal response?

Question 2

Name the five landforms particularly distinctive of the current or former action of valley glaciers. Which one is depositional?
 
  What will be an ideal response?


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Hdosisshsbshs

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Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: 1) Glacial ice covered about two-thirds of North America. 2) Sea level was 100120 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.

Answer to Question 2

Answer: (1) U-shaped valleys, (2) knife-edge ridges and pointed peaks, (3) places where erosion overdeepened valleys to form lakes, (4) hanging valleys, and (5) moraine ridges. A moraine ridge is depositional.


WhattoUnderstand

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

chereeb

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Reply 3 on: Yesterday
Gracias!

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