Which energy transformation is only made possible by the combined processes of photosynthesis and cellular respiration?

The energy transformation made possible by the combined processes of photosynthesis and cellular respiration is the conversion of solar energy into chemical energy and then into usable energy for living organisms. Photosynthesis captures solar energy and stores it as chemical energy in glucose, while cellular respiration breaks down glucose to release energy in the form of ATP. This cycle supports life by providing energy for growth, reproduction, and other vital processes.