This video shows the retreat of the Laurentide ice sheet that covered much of North America from 18,000 to 8,000 years ago.
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This resource originally cataloged at:
This resource is referenced here:Subject
: Geoscience:Atmospheric Science:
Climatology Resource Type
: Middle (6-8), College Lower (13-14), High School (9-12)Theme
: Teach the Earth:Course Topics:
Atmospheric Science, Teach the Earth:Incorporating Societal Issues:
: Hydrosphere/Cryosphere, Climate, Time/Earth History