Carbon Cycle

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1) One arrow from atmosphere which is photosynthesis

CO2 is removed by plants and algae.

2) Some carbon is returned to the atmosphere by plant respiration. Some is eaten by animals when plants are eaten.

3) Some carbon is returned to atmosphere by respiration.

4) When they die microorganisms feed on them and then some is returned to the atmosphere via respiration.

5) Waste from animals is taken up by soil.

6) Some useful plant and animal products are burnt and CO2 is returned through combustion.

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