Answer the questions about the graph: 1. Based on the trend depicted in the graph, explain what you think the relationship might be between organisms performing respiration and the organisms performing photosynthesis in this area of the world.

2. What effects might this steady increase of carbon dioxide have on the organisms living in this area?

3. Describe the changes you would expect to see to this graph if the population of cyanobacteria increased dramatically in the ocean water surrounding Hawaii in 2003. Explain your predictions.