scientists can study the layers of ice to see how the earth changed throughout the decades.
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multi polar
GLOBLE WARMING little dead polar bear and stuff like that
They faced problems such as harsh climate, little food, independence, and thin air.
It means a world with 2 superpower nations i.e. the US and the USSR during the Cold War
well... i will say dats its pretty cold....ya know polar bears, ice , snow ya know cold stuff like dat!