These symbiotic associations can be divided into parasitism, mutualism and commensalism. Species interact in various ways&colon; competition, predation, parasitism, mutualism, commensalism, etc. Lichen associations may be examples of mutualism, commensalism or even parasitism, depending on the species. This leads to complex interactions between species including mutualism, predation/parasitism, and competition. This can be contrasted with mutualism, a type of symbiosis. Collectivist anarchism could be seen as a combination of communism and mutualism. Species interact in three ways&colon; competition, predation and mutualism. Collectivist anarchism could also be seen as a combination of communism and mutualism. Inceptive currents among classical anarchist currents were mutualism and individualism. Mutualism, or mutually beneficial interactions between species, is common in ecological systems. Bees provide a good example of the mutualism that exists between hymenopterans and angiosperms. In this ant-fungus mutualism, both species depend on each other for survival. This idea leads to the concept of fig-fig wasp mutualism. What maintains genetic variability in the face of selection for mutualism (cooperative behavior)? Ants vary in their level of mutualism with whistling thorn trees.