A food web is similar to a food chain but larger,and it is a diagram that combines many food chains into one picture. The diagram uses arrows to show the energy relationships among organisms.
For example, an oak tree is an autotroph and produces acorns - this is called the producer. Herbivore such as Mice, squirrels, and insects eat these acorns and because there are many mice, predators such as weasels, snakes and raccoons have food. With insects in the acorns, other predators would be attracted (like skunks or opossums) and therefore, foxes, hawks or owls could all find food.