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The key danger for polar bears posed by the effects of climate change is malnutrition or starvation due to habitat loss.Polar bears hunt seals from a platform of sea ice. Rising temperatures cause the sea ice to melt earlier in the year, driving the bears to shore before they have built sufficient fat reserves to survive the period of scarce food in the late summer and early fall.
The largest living species of bear and the largest land carnivore, the polar bear is closely related to the brown bear. So much so, in fact, the two species can interbreed. They live in the Arctic ...
The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can interbreed.The polar bear is the largest extant species of bear and land carnivore, with adult males weighing 300–800 kg (660–1,760 lb).
Churchill, Manitoba, is known throughout the world as the place where hundreds of polar bears gather each fall to wait for the sea ice to return to Hudson Bay.The town is also a hub for Polar Bears International and several of PBI's programs including Tundra Connections webcasts [6] – free, live webcasts provided by polar bear and climate scientists and geared towards students, families and ...
Scientists from Washington State University and the U.S. Geological Survey equipped 20 polar bears in northern Canada with cameras strapped to their necks. What they discovered was alarming.
An isolated group of polar bears living in southeast Greenland has surprised scientists with its ability to survive in a habitat with relatively little sea ice. Polar bears face existential threat ...
An estimated 30,000 brown bears live in Alaska. [3] Of that number, about 1,450 are harvested by hunters yearly. [4] Brown bears can be found throughout the state, with the minor exceptions of the islands west of Unimak in the Aleutians, the islands south of Frederick Sound in southeast Alaska, and the islands in the Bering Sea. [2]
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