Bears and People
- Kind
- Internet Article
- Date
- 2014
- Publisher
- Adirondack Wildlife
- Retrieved
- Apr 21, 2014
1 meme from this reference
Why Black Bears Sleep in Trees
The ancestors of modern North American bears evolved in Asia during the Pleistocene, wandering over to Alaska during several appearances of the Bering land bridge, between the Bering and Kamchatka Peninsulas. Advancing and receding glaciers, fueled by evaporating sea water, caused ocean levels to alternately drop and…