Bacteroidetes is a phylum of bacteria that are primarily found in the intestines of humans and other animals. They play a crucial role in breaking down complex carbohydrates and fibers, aiding in digestion and nutrient absorption. These bacteria are essential for maintaining a healthy gut microbiome. Members of the Bacteroidetes phylum are diverse and can be found in various environments, including soil and marine ecosystems. They are known for their ability to thrive in anaerobic conditions, meaning they can survive without oxygen. This adaptability makes them important for various ecological processes, including the decomposition of organic matter.