Photosynthesis is a process used by plants and other organisms to change the light energy captured from the sun into chemical energy which can be beneficial to fuel the organism's activities. The Photosynthesis happens in algae, plants, and several species of bacteria but it will not happen in archaea. Photosynthetic organisms are called as photoautotrophs, because they can shape their own food. In cyanobacteria, algae, and plants, photosynthesis uses carbon dioxide or water, releasing oxygen as a waste product. The Photosynthesis is vital for all aerobic life on Earth.