Before revision: Resources The varied and complex physical, chemical, geological and biological processes occurring in the ocean can produce economically viable concentrations of a range of minerals, notably in the vicinity of hydrothermal vents, where highly concentrated fluids precipitate out their solutes on cooling.
After revision: Resources The varied geological and biological processes occurring in the ocean produce economically viable concentrations of a range of minerals, notably in the vicinity of hydrothermal vents, where highly concentrated fluids precipitate out their solutes on cooling.