Answer:The simulation limits the ability to model ocean's PH affecting biodiversity because there are lots of additional factors like human influence that can affect biodiversity as well. The simulation does not take into account all the other factors.
Explanation: The question is what does the model limit so the answer would be this... you can tell this is the answer also because of the way the next question on the worksheet is worded "How would you revise the simulation so users can evaluate the role of human activity in the pH of the ocean? "