[Chаpter 15. Mаrine Geоlоgy: The Study оf Oceаn Basins and Coasts] When sea level rises, an ocean may invade a river valley, producing a nearshore body of water of mixed and variable salinity, which is termed a(n) ________.
[Chаpter 5. The Rest оf the Rоck Cycle: Sedimentаry аnd Metamоrphic Rocks] Which of the following must take place before a sedimentary basin can be formed?