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Bering Strait Migrations.
- Source :
- Salem Press Encyclopedia, 2022. 3p.
- Publication Year :
- 2022
-
Abstract
- About two million years ago, for reasons not entirely understood, earth’s temperature began to fall. In the north, more snow fell in winter than melted in summer, and great sheets of ice formed on the landmasses. These glaciers went through a series of advances and retreats—sliding forward under the influence of gravity and melting back under warmer climatic conditions.
- Subjects :
- Human migrations
Pleistocene Epoch
Indigenous peoples of the Americas -- Origin
Subjects
Details
- Database :
- Research Starters
- Journal :
- Salem Press Encyclopedia
- Publication Type :
- Reference
- Accession number :
- 89454130