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"Why is Australia a continent and Greenland is not? Even though Australia is the smallest of the accepted continents, Australia is still more than 3.5 times larger than Greenland. There has to be a line in the sand between small continent and the world's largest island and traditionally that line exists between Australia and Greenland. Geologically, Australia lies on its own major tectonic plate while Greenland is part of the North American plate."
I'm sharing this link for two reasons.
Tags: Greenland, Australia, geology.