What is the main source of energy for all three energy roles?

3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.Click to see full answer. People also ask, what are the three energy roles?1 (a) Name the three energy roles that organisms fill in an ecosystem. . Each of the organisms in an ecosystem fills the energy role of producer, consumer, or decomposer.Beside above, how do organisms in each of the three energy roles obtain chemical energy? An organism that can make its own food is a producer. An organism that obtains energy by feeding on other organisms is a consumer.. Decomposers break down wastes and dead organisms and return the raw materials to the ecosystem. Subsequently, one may also ask, what are energy roles? -many kinds include herbivores (plant eaters), omnivores (plant and animal eaters) and carnivores (meat eaters) An energy role is how an organism obtains its energy and how it interacts with other living things in its community.How is energy used by organisms?Organisms ingest large molecules, like carbohydrates, proteins, and fats, and convert them into smaller molecules like carbon dioxide and water. This process is called cellular respiration, a form of catabolism, and makes energy available for the cell to use.