More CO2 in air → more CO2 dissolves → more H+ → lower pH.
1. What best describes ocean acidification in the context of the carbon cycle?
2. Why does burning fossil fuels contribute to ocean acidification?
3. What happens first when carbon dioxide dissolves in seawater?
Ocean acidification — definition?
Chemical increase in seawater acidity from CO2.
Carbon cycle exchange — role?
Balances carbon transfer between atmosphere and ocean.
Fossil fuel burning — effect?
Raises atmospheric CO2, overloads natural exchange.
CO2 dissolving — process?
CO2 gas transfers into seawater and reacts with water.
Diffusion — mechanism?
Movement from low to high concentration to balance levels.
Carbonic acid — formation?
Formed when CO2 reacts with seawater.
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