The Carbon Cycle

4.9 Describe the stages in the carbon cycle, including respiration, photosynthesis, decomposition  and combustion.

1. Photosynthesis:  CO2 and H2O are combined using chlorophyll and that light energy is trapped and used to form organic molecules such as glucose. Here the carbon is coming from the atmosphere. Photosynthesis is responsible for reducing the atmospheric CO2.

2.Feeding: We can look at the food chain and how carbon passes through the different trophic levels. So here the consumer takes in the carbon from the producer (Above) and uses this to reconstitute it's own body material and grows. and so on and the carbon passes through the food chain.

3. Respiration: C6H12 + O2 ----> Energy + CO2 + H2O   Adds CO2 through the atmosphere.

4. Decomposition: All the organisms eventually will die and their organic molecules that remain are broken down by the decomposers (bacteria and fungi) which will result in the release of the CO2 in the atmosphere

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