The first level of the Trophic Food Chain consists of producers, also known as autotrophs. Autotrophs create their own food and don’t depend on any other organism for nutrients. Most autotrophs use the process photosynthesis to create food, with their ingredients being sunlight, carbon dioxide, and water. Plants are the most well known producers out there. There are numerous types of plants in the world ranging from grass to trees. Other examples of producers include Phytoplankton, and some bacteria that live in active volcanoes. These bacteria use sulfur rather than carbon dioxide, and go through a process called chemosynthesis.