The relationship in which organisms in an environment depend on each other for resources and survival is called symbiosis and the relationship is called symbiotic relationship. There are about five symbiotic relationship such as mutualism, commensalism, predation, parasitism, and competition. A change in one species that leads to a change in another species with which it interacts is called co evolution. In this type of evolution, both the organisms experience changes due to their depend nature on one another.
