As tiny as they are, marine plankton play pivotal roles in biogeochemical cycles and sustaining aquatic ecosystems, producing around half of the oxygen on Earth and also acting as carbon sinks. When they die, their decomposing cells produce dissolved organic carbon that can be transformed and st...

Source: [Phys.org](https://phys.org/news/2026-09-dead-alive-plankton-marine-ecosystems.html)

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