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Photosynthesis is a process used by plants and other organisms to convert light energy, normally from the Sun, into chemical energy that can be later released to fuel the organisms' activities.arbon dioxide is converted into sugars in a process called carbon fixation. Carbon fixation is an endothermic redox reaction, so photosynthesis needs to supply both a source of energy to drive this process, and the electrons needed to convert carbon dioxide into a carbohydrate.
Complete each statement. 26.A process in which energy from the sun is used to make sugar molecules is called _________________________. 27.In deep-ocean ecosystems, the _________________________ that escapes from the cracks in the ocean floor is used by bacteria to make their own food. 28.Organisms that get their food by breaking down dead organisms are called ____________________. 29.A process within the cell of an organism that uses glucose and oxygen to produce carbon dioxide, water, and energy is called ______________________________.