Interaction go on continuously between producers, consumers and decomposers.
There is a definite sequence in these interactions which is called the food chain.
Each chain consists of four, five or more links.
An ecosystem consists of many food chains that are interconnected at various levels. Thus, a food web is formed.
An organism may be the prey for many other organisms.
For example, an insect feeds upon leaves of various plants but the same insect is the prey for different animals like frog, wall lizard, birds, etc.
Many food chains connected together form an intricate web called as food web.
