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Based on the cycle of photosynthesis and cellular respiration, one can say that the ultimate original source of energy for all living things on Earth is
The energy used in the Calvin cycle for the production of carbohydrate molecules comes from
ATP made in the light reactions of photosynthesis
During photosynthesis, the series of reactions that create the glucose needed for energy and growth is called
the Calvin cycle
All organic molecules contain carbon atoms that ultimately can be traced back in the food chain to
carbon dioxide from the atmosphere
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