Here's a breakdown:
* Glacially carved valley: Glaciers are powerful forces that carve out deep, U-shaped valleys as they move across the land.
* Drowned by incursions of the sea: As sea levels rise, these valleys can be flooded by the ocean.
Fjords are common in regions that were once covered by glaciers, such as Norway, Greenland, Chile, and Alaska. They are characterized by their steep sides, deep waters, and narrow inlets.
