Lesson 3: Ocean Acidification
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Lesson 3: Ocean Acidification
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  • Description:
    Lesson 3 describes the ocean as a carbon sink that absorbs atmospheric carbon. Students read evidence that increasing carbon dioxide (CO2) levels in the ocean are correlated with decreasing ocean pH. In the activity, students develop and test a hypothesis about how acidic solutions affect calcium carbonate, which forms shells. Students explain the connection between ocean acidification and shell-building organisms including corals.
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