Current evidence indicates that the process of photosynthesis arose more than three billion years ago. its origin had a huge impact on existing organisms and on the physical characteristics of the biosphere. which major physical change could be attributed to photosynthesis?

5. what might happen if you were to remove all light from the setup after the discs have all become buoyant? describe what you would see. explain why this would occur with relation to cellular processes like respiration. [referring to an ap biology lab in which spinach discs are placed in a sodium bicarbonate solution and exposed to light.]