Carbon Cycle All living organism utilize carbon to build ___________________. Reflects the reciprocal processes of photosynthesis and cellular respiration. _______________________________________ are the main mechanisms for cycling carbon. Found in fossil fuels and other mineral sources, ie: rocks, sediment in rivers. Nitrogen Cycle Most of the nitrogen cycling in natural ecosystems involves local cycles between organisms and soil or water Found in many organic molecules Main reservoir is the ______________________ Enters the atmosphere from the soil via ____________________ Summary of nitrogen fixation:___________________________________
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Reflects the reciprocal processes of photosynthesis and cellular respiration. **Photosynthesis and cellular respiration** are the main mechanisms for cycling carbon. Found in fossil fuels and other mineral sources, i.e., rocks, sediment in rivers. ** Show more…
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