Flow of energy and cycling of matter in ecosystems
https://www.khanacademy.org/science/hs-biology/x4c673362230887ef:matter-and-energy-in-ecosystems/x4c673362230887ef:flow-of-energy-and-cycling-of-matter-in-ecosystems/a/flow-of-energy-and-cycling-of-matter-in-ecosystems
WebNext, energy and matter move up the trophic levels of an ecosystem as producers are eaten by primary consumers, which are then eaten by secondary consumers, and so on. Some of the organic material eaten by consumers is used for cellular respiration (again, releasing CO A and heat), some is stored as biomass, and the rest is excreted as waste.
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