What is a food web?

A food chain is a linear network of links in a food web starting from producer organisms and ending at apex predator species, detritivores, or decomposer species. A food chain also shows how the organisms are related with each other by the food they eat. Each level of a food chain represents a different trophic level.

A food web is a system in the environment starting from the producer, usually a plant, and ending at apex predator species, like a lion. It shows how the organisms are related to each other by the food they eat.