Calcium carbonate is used by corals, shelled organisms, and a variety of other marine creatures to construct tissue components. What is the impact of climate change on their ability to construct those components? Temperature increases have diminished available calcium ions in marine habitats Hydrogen ions have increased acidity and will bind to carbonate ions decreasing avialblity to build calcium carbonate shells Hydrogen ions increase basicity of marine waters and induce dissolution of calcium carbonate structures Ocean warming is causing reactions to speed up and shells therefore are thinner and weaker Shelled organism are a product of founder effect

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