premise: Moreover, Antarctic seas are uniquely subject to the impacts of ocean acidification, the result of oceans absorbing anthropogenic atmospheric carbon dioxide (CO2).
hypothesis: Ocean acidification occurs when excess carbon dioxide in the atmosphere causes the oceans to become acidic.
hypothesis_graph_structure: Ocean acidification<>occurs<>when excess carbon dioxide in the atmosphere causes the oceans to become acidic$$$excess carbon dioxide in the atmosphere<>causes<>the oceans to become acidic$$$the oceans<>to become<>acidic