Answer:
The carbon cycle mainly is the relationship among carbon dioxide, glucose and carbon.
Step-by-step explanation:
The carbon cycle as a reference point we can say that it starts in air, with the carbon dioxide dissolved in it. Plants or phytoplancton can absorbed it to transform into glucose or other organic compound useful for plants of plancton. During this process the carbon cycle is closely related with oxygen cycle and metabolic processes in living things.
After the carbon is absorbed it can be regenerating as carbon dioxide by bacteria or animals to the air after getting the sufficient carbon for the glucose structure or another organic compound necessary for these living things.
The other way of carbon, is that can be deposit in soil as carbon and with time can be transformed into oil by bacteria but in an anaerobic environment not in an aerobic environment.