Green Non-Sulfur Bacteria are a group of photosynthetic bacteria that do not require sulfur for their energy production. They primarily use organic compounds and light to generate energy through a process called anoxygenic photosynthesis. These bacteria are typically found in various environments, including freshwater and soil, where they play a role in nutrient cycling. These bacteria are characterized by their green pigments, which help them capture light energy. They are important in ecological systems and have potential applications in biotechnology, such as in the production of biofuels and bioremediation. Their unique metabolic pathways make them a subject of interest in microbiology and environmental science.