Autotrophs use a process called photosynthesis to make their own food. During photosynthesis, autotrophs use sunlight, carbon dioxide, and water to produce glucose and oxygen. The process takes place in specialized structures called chloroplasts, which contain a pigment called chlorophyll. Chlorophyll captures sunlight and the energy is used to break down water molecules into hydrogen ions and oxygen. The hydrogen ions are then used to convert carbon dioxide into glucose, a form of sugar that serves as food for autotrophs. The released oxygen is released into the atmosphere as a byproduct of photosynthesis. Overall, photosynthesis is the method by which autotrophs convert sunlight into usable energy in the form of glucose, allowing them to make their own food and survive.
