How do marine animals fix carbon dioxide? (1 marks question)
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Balances in Carbon Dioxide Levels.Marine plants and animals play a role in the uptake and release of carbon dioxide in the ocean. Plants, primarily phytoplankton but also macrophytes such as this seaweed, take up carbon dioxide and release oxygen, which oxygen-dependent animals need to survive.
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As the amount of carbon dioxide in the atmosphere rises, the oceans absorb a lot of it. In the ocean, carbon dioxide reacts with seawater to form carbonic acid. This causes the acidity of seawater to increase.
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