Learning Menu A.
Published on Nov 18, 2015
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PRESENTATION OUTLINE
North America prior to human settlement
Photo by Stuck in Customs
Ice Age is the time period when the entire Earth experienced notably colder climate conditions.
Photo by Stuck in Customs
During the Ice Age humans crossed from Russia to Alaska on a sheet of ice. This is known as the land bridge theory.
Photo by LadyDragonflyCC - >;<
The humans followed the herds of animals south because if they didn't they would starve. The herds of animals moved south because of the warmer climate.
Photo by Airwolfhound
The animals moved back north again because of the ice melting and the climate getting warmer.The humans followed them of course!
Photo by Tanapon
The warmer climate caused glaciers to melt and the ocean's water level to rise.
Photo by angela7dreams
