The document discusses the energy pyramid and the roles of producers, consumers, herbivores and carnivores within the food chain. It explains that producers obtain energy from the sun, store it and pass it to other organisms. Herbivores eat plants and obtain energy passed up from the plants. Carnivores eat other animals and are at the top of the food chain, obtaining energy passed up from their prey. The document instructs to drag symbols representing the sun and food sources to the appropriate organisms on the diagram.