Photosynthesis uses carbon dioxide from the atmosphere to make glucose (food) for plants. These plants can then be eaten by animals. Carbon is used by plants and animals and returned to the biosphere through waste and decomposition. Living organisms use cellular respiration to convert food energy (glucose) into usable cellular energy (ATP). Photosynthesis and cellular respiration have a relationship in that the reactants of one are the products of the other. Arrows A and D in the graphic both show the process of cellular respiration. Using this information, what can you infer about the contribution of cellular respiration to the cycling of carbon through the carbon cycle?
Responses
A Cellular respiration uses CO2 from the atmosphere.Cellular respiration uses CO 2 from the atmosphere.
B Cellular respiration releases CO2 back into the atmosphere.Cellular respiration releases CO 2 back into the atmosphere.
C Cellular respiration releases CO2 back into the hydrosphere.Cellular respiration releases CO 2 back into the hydrosphere.
D Cellular respiration increases CO2 concentration in the geosphere