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北极熊英语阅读资料

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it doesn't directly influence carbon emissions so to speak, we think it isa definite decision in the right direction and we're pleased to see the Fish and Wildlife Service is supporting the best science on this species," he added. Bergen noted that saving the polar bear will depend on international cooperation. Permanent sea-ice habitat is likely to remain in areas outside of the U.S., particularly in Canada and Greenland. Scientists view these areas as refuges that could allow some polar bear populations to survive over the long term and repopulate the Arctic if temperatures decrease and sea ice returns. "If you take a long-term view — meaning a hundred-year view into the future," he said, "polar bears' existence is not necessarily totally dependent on what happens in the United States."

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