Different Examples of the Food Chain

A look at food chains - green plants are eaten by herbivores which are then eaten by carnivores. Focusses on a farm as a case study - the sun feeds the wheat in the field which is eaten by herbivores; these herbivores are eaten by carnivores and those by larger carnivores - possibly a buzzard or kestrel.The wheat being made into bread which is then eaten by humans is identified as a different type of food chain.