Answer: When the war ended in 1945, these two countries emerged as world super powers. They were it: the two most powerful states in the world. When the war ended, the two super powers had very different ideas of how Europe should be restructured. Herein lies the roots of the Cold War.
Because of increasing sea ice.
In climate change taking place since then, there has been an opposite problem. Beginning in the late 19th century, a reduction of sea ice has been progressing in the Arctic regions. The pace of ice mass loss has been accelerating especially since the 1970s. In the first decade of the 21st century, Greenland's ice loss accelerated at a rate of 30 gigatonnes a year.
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