The natural environment is the set of living and non-living things on Earth which occur in a state substantially not influenced by humans. The term is most often applied to an ecological complex, which includes all of the plants; animals; microorganisms; abiotic factors such as minerals; rocks and magma; water bodies; and atmosphere layers. There are extremely complex interactions between the livingorganisms and abiotic elements as well as meteorological influences, all of which combine to form rich speciation and biodiversity in most natural systems. Exceptions to this species richness are in extreme conditions of pH, temperature and deep ocean conditions, where only a limited number