All living things need food to have energy which help them to grow and
move.A food chain tells how each living thing gets its food and how most
of living beings are dependent on each other for their energy
requirement.It is also called food web or energy pyramid.A food chain
always starts with a producer, which in most of the cases is a plant and
it ends with a predator,it is at the top of the food chain. Consumers,
scavengers,herbivores and decomposer form important constituents of a
food chain
