The document discusses the relationships between organisms in a food web. It defines producers as organisms that make their own food, mostly plants. Consumers must find their own food and include all animals. Decomposers like worms and fungi break down dead and decaying matter. Consumers are classified as herbivores that eat only plants, carnivores that eat only meat, and omnivores that eat both plants and meat. A food chain shows the transfer of energy from producers to consumers as one organism eats another. A food web depicts overlapping food chains and shows how all animals in a community obtain food. An energy pyramid illustrates the decreasing amount of energy at each trophic level in a food web.