What is the primary chemical driver causing ocean acidification, which severely threatens marine calcifiers like corals and shellfish?

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A Agricultural nitrogen runoff
B Dissolution of atmospheric CO₂
C Industrial thermal pollution
D Microplastic degradation

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Answer: B. Dissolution of atmospheric CO₂

• Answer: B) Dissolution of atmospheric CO₂
• Explanation: When oceans absorb excess atmospheric carbon dioxide, it reacts with seawater to form carbonic acid, lower the pH, and reduce available carbonate ions needed for shell building.

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What is the primary chemical driver causing ocean acidification, which severely threatens marine calcifiers like corals and shellfish?

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