Warren is developing a model for tracking carbon atoms within an ecosystem and its environment. Warren knows that plants perform both photosynthesis and cellular respiration. Does the number of plants in the ecosystem change the effect of the ecosystem on carbon dioxide levels in the atmosphere? A. No. Photosynthesis and cellular respiration do not involve carbon dioxide.
B. No. In plants, photosynthesis adds as much carbon dioxide to the atmosphere as cellular respiration removes.
C. Yes, because photosynthesis removes carbon dioxide from the atmosphere and stores the carbon in plant tissues.
D. Yes, because photosynthesis releases more carbon dioxide into the atmosphere than cellular respiration removes.
E. Yes, but only if large plants are included in the model, because algae and other small photosynthetic organisms do not take up carbon dioxide.