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an ice sheet
An iceberg forms after a glacier flows into a body of water, like an ocean. When the top portion of the glacier breaks off and floats, this becomes the iceberg.
There are no rivers in the southeastern United States that flow in the Pacific Ocean. However, the Columbia River forms a portion of the border between Washington and Oregon and flows into the Pacific Ocean.
The American river?
Columbia
That is called a delta.
It is the Red Sea - it flows into the Gulf of Aidan - which forms part of the Indian Ocean.
Columbia River
ocean
Icebergs.The icebergs that break off do so because the glacier of which they are a part flows toward the sea, like a river, only much slower.When a fracture or a vulnerable sheer exists in the glacier, and the glacier tongue drifts far enough into open water, and the sea currents or waves exert enough pressure on the tongue, the tongue splits off from the glacier and becomes an iceberg.
Columbia river
The American river?