Chemical Disequilibrium Inevitably Exists near Deep-Sea Volcanic Vents, Because

Chemical disequilibrium inevitably exists near deep-sea volcanic vents, because

A) there are unequal concentrations of minerals and water
B) the high-temperature vent water causes water molecules to break down into hydrogen and oxygen
C) mixing between the high-temperature vent water and the surrounding low-temperature ocean water creates conditions in which minerals and water will undergo chemical reactions
D) the high pressures existing at the ocean floor cause chemical reactions between minerals and water