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Fresh water supplies in Asia and south America is disappearing as the glaciers m
Fresh water supplies in Asia and south America is disappearing as the glaciers m
游客
2024-06-13
39
管理
问题
Fresh water supplies in Asia and south America is disappearing as the glaciers melt away. [br] The ice tongue growing out from the Greenland coast used to reject salt back into the water, making ______ heavier and helping it to sink.
选项
答案
the water。
解析
根据题干中的信息词ice tongue和Greenland coast定位到原文倒数第三段,可知格陵兰海域中部在夏季不会冻结,但在冬季,通常会被从格陵兰海岸延伸而出的一大片冰覆盖,这片冰会释放盐分回到水中,从而增加水的密度,并使其下沉,而自1997年以来,这块冰舌就没有再出现过,由此可得答案。
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