WHY are there freshwater icebergs in the salty ocean?

Since the glaciers of Greenland and Antarctica.

When the salty ocean water evaporates, it turns fresh and falls as precipitation. In Greenland and Antarctica, the fallen snow compacts under its own weight and slides off the edges of the land. A so-called ice shelf glacier is formed, and huge pieces of icebergs break away from the edges of the glacier.

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