how are some organisms able to survive without sunlight and photosynthesis?
Some organisms are able to survive without sunlight and photosynthesis through similar processes, for example cellular respiration. Cellular respiration is the process of oxidizing food molecules, like glucose, to carbon dioxide and water. Other autotrophs (organisms who produce their own food) who live in an environment that lacks sunlight, make their own food through chemosynthesis. A process similar to photosynthesis but instead of light it uses chemicals as an energy source.