Photosynthesis is very important for our biosphere. Photosynthetic plants convert solar energy into the chemical energy and that stored chemical energy flows into herbivores, predators, parasites, decomposers, and all other forms of life . In the photosynthetic process, light energy is absorbed by the chlorophyll molecules of plants to convert carbon dioxide and water into carbohydrates and oxygen gas. Proteins, fats, nucleic acids, and other compounds also are synthesized during the process. And photosynthesis play important role for maintaining the atmospheric carbon dioxide and oxygen ratio.During the photosynthesis plants absorbs carbon dioxide and release oxygen to atmosphere. All living organisms need oxygen,They can't survive without oxygen.