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Author Question: During the most recent glacial advance, which peaked at 21,000 years ago, how much of North America ... (Read 97 times)

Mimi

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on: Jul 16, 2018
During the most recent glacial advance, which peaked at 21,000 years ago, how much of North America was covered with ice?
 
  What will be an ideal response?

Question 2

Describe the features left behind after an ice sheet retreats from a region.
 
  What will be an ideal response?


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fdliggud

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

Glaciers covered 16 million square kilometers or roughly 2/3rds of North America.

Answer to Question 2

Large areas of scoured, plucked, and abraded rock surfaces.
Large areas that are thickly covered with till.
Molding of the landscape by glacier flow to form streamlined ridges that parallel the direction of glacier movement.
Landscapes with countless lakes.


Mimi

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Reply #2 on: Jul 16, 2018
Thank you


fdliggud

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Reply #3 on: Jul 16, 2018
No problemo


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