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Scientists predict that as atmospheric carbon dioxide levels increase, the pH of the oceans will drop. What is the best expla
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Option D - carbon dioxide combine swith water to form an acid

When carbon dioxide dissolves in seawater, the water becomes more acidic and the ocean's pH (a measure of how acidic or basic the ocean is) drops.As CO2 dissolves in sea water it forms carbonic acid, thereby decreasing the ocean's pH, leading to a suite of changes collectively known as ocean acidification.

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