misserinbb9950 misserinbb9950 21-11-2022 Chemistry contestada During periods of glacial advance, ______ in seawater. CHOOSE ALL THAT APPLY. concentrations of 18O and 16O remain steadyconcentrations of 18O increaseconcentrations of 16O decreaseconcentrations of 16O increaseconcentrations of 18O decreaseThis is actually an earth science question, that was not an option