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The point beyond which trees cannot grow because of extreme cold, type of soil, and other factors
Large masses of ice that flow slowly over land and break off into water to form huge icebergs
A piece of glacier that has moved down a mountain or across a polar region and broken off into the sea
Strange-looking birds who spend their time swimming and diving for fish in the Arctic's icy waters
Why is the tundra called the "Land of the Midnight Sun"?
There are days during the summer when the sun never sets.
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