Final answer:
The oceans' limited absorption of added CO2 due to slow transport processes into the deep ocean contributes to the persistence of global warming.
Explanation:
Oceans and their extensive capacity to absorb carbon dioxide play a crucial role in the carbon cycle. While oceans can hold significantly more CO2 than the atmosphere, only about ten percent of the added CO2 from human activities is taken up by the oceans due to slow transport processes into the deep ocean. This can contribute to the persistence of global warming despite the oceans' absorption capabilities.
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