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English: Map showing subpopulation of Polar Bears in the Arctic. This map was improved or created by the Wikigraphists of the Graphic Lab (en). You can propose images to clean up, improve, create or translate as well.
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 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).
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Tunnel through the polar bear exhibit. The 4-acre Arctic Ring of Life, opened in October 2001, is home to three polar bears and two southern sea otters. It is among the largest polar bear habitats in North American zoos. In 2003, the Zoo was awarded the AZA Significant Achievement Award for the Arctic Ring of Life. [30]
Polar bears are listed on the Federal Species at Risk Act (SARA) added in 2011. [18] Polar bears are also protected under The Convention on International trade in Endangered Species . [19] The assessment of the polar bears is in large part due to the increasing loss of sea ice that is a vital part of their habitat and hunting patterns. [17]