O Case Summary 1. Answer the questions below to help you write your case summary. 2. Use the scroll bar on the right to move down the page. Reasoning How does decreasing the pH decrease carbonate (CO32-) concentration ? Type your answer here Predicting Some calcifiers can use bicarbonate (HCO3 ) to make their shells. How will they be affected by the decrease in pH? Type your answer here Submit You can submit your case summary once you have answered all of the questions