3. In your experiment, you created two separate systems: cellular respiration in part 1, and photosynthesis in part 2. Explain whether these two separate systems are a good representation of the way cellular respiration and photosynthesis work in the natural world. Can living things survive in a system involving only cellular respiration or only photosynthesis? If not, how could you use similar materials to set up a new experiment that would better model the real world? (3 points)