How is energy transferred through a community of organisms glencoe?

I believe this occurs through feeding or acquisition of food. To describe the transfer of energy through a biological community (ecosystem)  a food chain is used. All living things require nutrients from food they eat, these nutrients are obtained by feeding on plants or other animals. When organisms feed on others energy is transferred to the "eater" organism. However most of the energy consumed by the organisms is released as heat and only about 10% of the energy remains and available at one level of a food chain transfers to the next.