EviefersRoth

A producer is an organism that produces its own food through photosynthesis. The primary source of energy in the ecosystem is solar energy. Ecosystem Energy Flow Shmoop Biology Energy Flow Ecosystems Energy Energy flow in Ecosystems. . Sun is the ultimate source of energy. Energy flow in ecosystemAll living things need energySome biotic factors get their energy from the sun. Producers receive chemicals from light rays 1st-level consumers eat producers 2nd-level consumers eat 1st-level consumers and 3rd-level consumers eat 2nd-level consumers. The flow of energy in the ecosystem is unidirectional because the energy lost as heat from the living organisms of a food chain cannot be reused by plants in photosynthesis. Arrows are used to show the direction of energy flow. 2 3 Each of the levels within the food chain is a trophic level. Producers are at the bottom of the food chain followed by primary. A food cha