@Ella_Maru Not calcium in the case of diatoms, but instead their cell walls are silica-based good paper describing it all is: https://t.co/sV2PHIldpc
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RT @PlanktonPundit: A diatom's bi-valved case, called the frustule, is made of opaline silica. This is perhaps one of the nicest explanatio…
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RT @PlanktonPundit: A diatom's bi-valved case, called the frustule, is made of opaline silica. This is perhaps one of the nicest explanatio…
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RT @PlanktonPundit: A diatom's bi-valved case, called the frustule, is made of opaline silica. This is perhaps one of the nicest explanatio…