Why is the polar bear one of the most prominent victims of climate change?
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Explanation:
Climate change and polar bears. Temperatures in the Arctic are rising at least twice as fast as the global average and sea ice cover is diminishing by nearly four per cent per decade. The loss of sea ice affects polar bears' ability to find food, studies show.
The report Polar Bears at Risk reviews the threats faced by the world's 22,000 polar bears and highlights that human-induced climate change is the number one long-term threat to the survival of the world's largest terrestrial carnivores. The burning of coal and other fuels emits carbon dioxide and other gases that blanket the earth, trap in heat and cause global warming. According to the Intergovernmental Panel on Climate Change (IPCC), climate change in the polar region is expected to be the greatest of anywhere on Earth.
"The WWF report shows that polar bears in Hudson Bay are being impacted by climate change," said Lynn Rosentrater, co-author of the report and climate scientist at WWF's Arctic Program. "The polar bear's basis for survival is being threatened by the reduction of the sea ice. Since the sea ice is melting earlier in the spring, polar bears move to land earlier without having developed as much fat reserves to survive the ice-free season. They are skinny bears by the end of summer, which in the worst case can affect their ability to reproduce."
Answer:
The impacts of global warming come on top of problems that polar bears face from hunting, toxic pollution and future oil developments in the Arctic. In some areas, research on polar bears shows a link between high contaminant levels and reduced immune system function.
Explanation:
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