Along with arctic animals, species that reside on mountaintops are also experiencing the effects of warming.

和北极圈的动物一样，生活在山顶地区的物种也受到了气候变暖的影响。

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For decades, researchers have worried about rising mercury levels in Arctic animals, such as seals, beluga whales, and Arctic char.

几十年来，研究者们一直担心北极动物，如海豹，白鲸，汞水平，北极红点鲑等动物的含汞量增加。

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The Arctic foxes feed mainly on birds, birds' eggs and other small animals.

北极狐主要以鸟类、鸟蛋和其他小动物为食。

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In the longer term, the tagging information could also help to assess how climate change is affecting these Arctic animals.

BBC: Walruses (Image: BBC)

It showed polar bear cubs in a den with their mother, with many people assuming the young animals were born and filmed in the Arctic.

BBC: Sir David Attenborough

Similar behavior exists in herds of caribou that migrate across the Arctic coastal plan to a specific calving ground even though it is unlikely any of the individual animals know where they are going.

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