Bacteroidetes and Firmicutes
These Bacteroides and Firmicutes are at least a minimum of 500 species in number and weigh around 3.3 pounds. These type of bacteria found in the gut of the human body. This bacterium is responsible for breaking down the carbohydrates and converts the bacteria into essential and useful vitamins. This type of bacteria is important and very responsible for eliminating the harmful bacteria from a human body.