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Created page with "== Introduction == Iron is an essential nutrient for all forms of life, including marine phytoplankton. It plays a crucial role in various metabolic processes such as photosynthesis, respiration, and nitrogen fixation. However, iron is often present in low concentrations in the ocean, making it a limiting nutrient for phytoplankton growth. This article discusses the various mechanisms that marine phytoplankton employ to acquire iron from their e..."