food
All living organisms are made up of carbon. Thus organisms are consuming carbon and being consumed by organisms made up of carbon.
Food webs and the carbon cycle are very closely related because every living organism is made up of carbon.
When a cow eats grass, it is consuming carbon. When a person eats the cow, the person consumes carbon. Thus, carbon moves through food webs.
It leaves living organisms through respiration and when organisms die and decompose.
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