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Warnings about the future of the polar bear are often contrasted with the fact that worldwide population estimates have increased over the past 50 years and are relatively stable today. [66] [67] Some estimates of the global population are around 5,000 to 10,000 in the early 1970s; [68] other estimates were 20,000 to 40,000 during the 1980s.
While hunting has long been an issue, global warming has done a number on polar bears' habitats recently. In fact, the World Wide Fund for Nature (or WWF) estimates that there are only 22,000 to ...
Global warming affects plants and animals. For plants, the warmer temperatures induce stress on the plants. [35] For animals, there has been a decrease in the number of polar bears in the Hudson Bay area. [36] Since 1981, the polar bear population has been declining.
Polar bears (2 C, 11 P) Pages in category "Species that are or were threatened by climate change" The following 13 pages are in this category, out of 13 total.
Majestic, increasingly hungry and at risk of disappearing, the polar bear is dependent on something melting away on our warming planet: sea ice. In the harsh and unforgiving Arctic, where frigid ...
The 1958 Statehood Act set up a program for polar bear management, and further conservation efforts, including the 1972 Marine Mammal Protection Act, have limited polar bear hunts. [10] Polar bear populations may be threatened by oil development and global warming. [10] [11] Only about 4700 polar bears are known to inhabit Alaska. [12]
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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