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Antarctica, the fifth largest continent on earth is covered -- 98% of it -- by an ice sheet. As gravity pulls the ice that flows off glaciers and ice tongues form in open sea water, the wave action breaks off the tongue and the ice floats away as an iceberg. This action takes tens of thousands of years.

The numbers of icebergs are innumerable: icebergs vary in mass from the size of a sedan to the size of New York's Manhattan Island. They float in the Southern Ocean and do not qualify as icebergs until they are wholly contained in sea water.

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9y ago

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