Please answer this as quick as possible. 15. Final Synthesis. Describe how a cell that is FIXED can be used to estimate the time spent in the phases of mitosis. Explain the process you used to determine the times for each phase.

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis