Under natural circumstances, the linear arrangement of food chains rarely takes place & these remains linked interconnected with each other through various kinds of organisms. Interlocking pattern of several interlinked food chains is termed as FOOD WEB. A food web is a graphical description of feeding relationships among species in an ecological community, that is, of who eats whom It is also a means of showing how energy and materials (e.g., carbon) flow through a community of species as a result of these feeding relationships. Typically, species are connected by lines or arrows called "links", and the species are sometimes referred to as "nodes" in food web diagrams.