Co2 C Atm Forms Organic Passed Released Dead

- CO2 taken in forms organic molecules via photo, the C used to form macromolecules,

macromolecules passed onto animals via feeding, and passed on through food chain

- C-containg compounds released via decomp from dead organisms, C released into atm as CO2 when decomposers respire, when dead organic matter accumalates in areas where decomposers not present, C trapped and eventually forms fossil fuels