photosynthesis is the process that provides a link between the source of energy (the sun) and all organism. It captures the sun energy and store in a form usable by organisms.
Sun (energy)———-Photosynthesis–———-Plants——–Organisms.
autotrophic organisms carry out the process of photosynthesis. Plants (leaves) and algae have adaptations (have chlorophyll),that absorb the sun energy. The products of photosynthesis are glucose and oxygen.