Hoorah for Geography! I feel better informed having watched the
two YouTubes below:
The first made me realize that the one continent was the original
emergent land mass on the planet, forming and reforming over
an active core...
The second - hold onto your hat - points out that it is as a result of
COLD that we have large tundra and desert areas on the planet, because
there is less moisture around when temperatures go down...
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