Social sustainability is the ability of a social system, such as a country, to function at a defined level of social well being indefinitely. A more complete definition of sustainability is thus environmental, economic, and social sustainability.
Depiction of the human body and bacteria that predominate. A microbiota is the ecological community of commensal, symbiotic and pathogenic microorganisms that literally share our body space.Joshua Lederberg coined the term, emphasising the importance of microorganisms inhabiting the human body in health and disease.he symbiotic relationship between animal host and microbiota has a significant impact on shaping the immune system. The immune system is able to recognize the types of bacteria that are harmful to the host and combats them, while allowing the helpful bacteria to carry out their functions.
Gut flora or, more appropriately, gut microbiota, consists of a complex community of microorganism species that live in the digestive tracts of animals and is the largest reservoir of microorganisms mutual to humans. In this context gut is synonymous with intestinal, and flora with microbiota and microflora.ntestinal bacteria also play a role in synthesizing vitamin B and vitamin K as well as metabolizing bile acids, sterols and xenobiotics. The human body carries about 100 trillion microorganisms in its intestines, a number ten times greater than the total number of human cells in the body.