VASTNESS FROM SMALLNESS. “The algae represent major producers of calcium carbonate and silica among the world’s biota. Calcification involves the precipitation of CaCO3 from Ca and CO ions. Algal calcification may account for up to half of global oceanic CaCO3 production. Silicification is less widespread among algal groups, which transform dissolved silicate to skeletal material. Diatoms play a key role in marine silica cycling.” High carbon sink.
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