What evidence do you have for the roles of photosynthesis and cellular respiration in the flow of energy in ecosystems?
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Photosynthesis has a role in the cycling of matter and flow of energy into and out of organisms. The flow of energy and cycling of matter can be traced. The chemical reaction by which plants produce complex food molecules (sugars) requires an energy input (i.e., from sunlight) to occur.
The process of photosynthesis converts light energy into stored chemical energy by converting carbon dioxide plus water into sugars plus released oxygen. Cellular respiration releases the energy needed to maintain body temperature despite ongoing energy transfer to the surrounding environment.
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Photosynthesis has a role in the cycling of matter and flow of energy into and out of organisms
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