Answer: A food web.
Explanation: A food web is a network of all the feeding relationships in an ecosystem. It is a complex interconnection of multiple food chains, with each organism occupying multiple positions in the web. A food chain, on the other hand, is a linear sequence of organisms, where each organism is eaten by the next one in the chain. An energy chain refers to the flow of energy through an ecosystem, while an energy web is not a widely used ecological term.