Biological Processes Affected by Ocean Acidification
why carbon dioxide makes seawater more acidic
Scientists use pH—a measure of the concentration of hydrogen
ions using a logarithmic scale—as an indicator of the acidity of a
solution. As the hydrogen ion concentration increases, a solution
becomes more acidic and its pH decreases. Because the
scale is logarithmic, a decrease of one pH unit corresponds to
a 10-fold increase in acidity.