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Sample 1 of 3 · Ocean acidification

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Lecture

Today we're exploring ocean acidification.
The ocean absorbs about 30 percent of atmospheric CO2.
When CO2 dissolves in seawater, it forms carbonic acid, which lowers the pH.
This makes it harder for shellfish and coral to build their shells, because they need alkaline conditions.
When marine organisms struggle, the entire food chain is affected. Fish lose habitat and food sources.
The economic impact is significant — commercial fishing industries face collapse.
Therefore, reducing CO2 emissions is urgent and critical.

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