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What is the primary process causing ocean acidification? | QuestionStock

Representative image for question: What is the primary process causing ocean acidification?

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Environment

What is the primary process causing ocean acidification?

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What is the primary process causing ocean acidification?

Options:

Uptake of atmospheric CO2 by seawater
Increased nutrient runoff
Chemical pollution from shipping
Thermal expansion of seawater

Correct answer: Uptake of atmospheric CO2 by seawater

Explanation: Ocean acidification results from seawater absorbing atmospheric CO2; since preindustrial times (~1750) surface-ocean pH has declined by about 0.1 units, increasing hydrogen ion concentration by roughly 30%.

Created 2026-03-10T17:32:27.964Z. Updated 2026-03-10T17:32:27.964Z.