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Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose or other sugars. This process takes place in the chloroplasts of plant cells, using water and carbon dioxide as raw materials. The energy from sunlight is used to split water molecules into hydrogen and oxygen, with the hydrogen being combined with carbon dioxide to form glucose. The oxygen produced as a byproduct is released into the atmosphere. Photosynthesis is essential for life on Earth, as it provides the oxygen that most organisms need to survive and is the primary source of energy for the planet's food chain. It is a complex process that involves several steps, including light-dependent reactions and the Calvin cycle, which occur in different parts of the chloroplast. Photosynthesis plays a crucial role in plant metabolism, as it provides the energy and carbon skeletons needed for other metabolic processes such as respiration, biosynthesis, and growth. It is also an important process in the global carbon cycle, as it regulates the amount of carbon dioxide in the atmosphere. Photosynthesis has been studied extensively by scientists in various fields including biology, chemistry, plant physiology and it has many application in renewable energy like biofuel production and artificial photosynthesis.