Fresh water supplies in Asia and south America is disappearing as the glaciers m

游客2023-09-15  16

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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