Use your observations to answer the questions below. Analysis and Conclusion Submit your observations and answer the questions in the essay box below. Where does the carbon dioxide in breath come from? What organisms use carbon dioxide to survive? Research the amount of carbon dioxide generally found in the air and in breath. Which has more carbon dioxide? What are some of the other sources of carbon dioxide in air? Based on your observations about the acidity of carbon dioxide dissolved in water, what ecological effects could be caused by excess carbon dioxide in the air? ( this project is from odessyware )