Final answer:
Photosynthesis is an energy-storing process that converts light energy into chemical energy, which is stored in the bonds of glucose. It is essential for all life on Earth.
Step-by-step explanation:
The relationship between photosynthesis and energy is that photosynthesis is an energy-storing process. It converts light energy into chemical energy, which is stored in the bonds of glucose. This energy is then used by organisms to power their metabolism and perform work. Photosynthesis is the only biological process that can capture energy from sunlight and convert it into usable chemical energy. It is essential for all life on Earth.