The graph shows data collected near the Mauna Loa volcano in Hawaii from 1955 to 2015. The data includes atmospheric CO2 levels, seawater CO2 concentrations, and seawater pH readings. If the current trend continues, the seawater near Mauna Loa will likely become due to the changing concentration of in the water.

Water become more acidic due to mixing of carbondioxide and sulfur dioxide with water.

Explanation:

If the eruptions from volcano continues, the seawater near Mauna Loa will likely become more acidic due to the changing the concentration of carbondioxide in the water. Sulfur dioxide is also releases from volcanic eruption which combines with water present in the cloud forming sulfuric acid. When this acid comes down with rain water and mixes with sea water, it change the pH of the water. When more carbondioxide gas combined with sea water, it form carbonic acid which lowers the pH of the water.