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text Moving ice : how the Great Lakes formed

Summary
"Almost 20,000 years ago, Earth's climate began to warm. Because of the changing temperatures, a miles-thick ice sheet started to shift. As the ice sheet moved, it carved deep pits in the land and left water in its wake. This melted ice filled the... Read more
Contents
What are the Great Lakes? -- Beginning with bedrock -- Glaciers on the move -- The early lakes -- Reading the rocks -- Lake stats -- The waters' flow -- The history of the Great Lakes -- The mystery of Le Griffon -- A mainspring of economy -- An e... Read more
Format
text
Description
32 pages : color illustrations : 22 cm
Publisher
PowerKids Press 2020

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