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As the ocean warms, a body of water called the Antarctic Polar Front - an upward movement of nutrient-rich sea that supports a huge abundance of marine life - is being pushed further south. This means that king penguins, which feed on fish and krill in th
2019年12月六级真题（第三套）阅读 Section C
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Earlier this month a separate study found that a combination of climate change and industrial fishing is threatening the krill (磷虾) population in Antarctic waters, with a potentially disastrous impact on whales, seals and penguins.
2019年12月六级真题（第三套）阅读 Section C
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king penguins are the second-largest type of penguin and only breed on specific isolated islands in the Southern Ocean where there is no ice cover and easy access to the sea.
2019年12月六级真题（第三套）阅读 Section C
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Penguins are sensitive indicators of changes in marine ecosystems.
2019年12月六级真题（第三套）阅读 Section C
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Penguins, like other seabirds and marine mammals, occupy higher levels in the food chain and they are what we call bio-indicators of their ecosystems.
2019年12月六级真题（第三套）阅读 Section C
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The report found that although some king penguins may be able to relocate to new breeding grounds closer to their retreating food source, suitable new habitats would be scarce.
2019年12月六级真题（第三套）阅读 Section C
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The study's report states that as global warming transforms the environment in the world's last great wilderness, 70 percent of king penguins could either disappear or be forced to find new breeding grounds.
2019年12月六级真题（第三套）阅读 Section C