Plants and animals release carbon during respiration and combustion of fossil fuels. Fossil formation and photosynthesis act as carbon sinks, storing and absorbing carbon dioxide, respectively, in the carbon cycle.
Respiration by Plants and Animals: During respiration, plants and animals act as carbon sources, releasing carbon dioxide as a byproduct.
Combustion of Fossil Fuels: The combustion of fossil fuels is a significant carbon source, emitting carbon dioxide into the atmosphere.
Formation of fossil fuels: The formation of fossils and the process of photosynthesis serve as carbon sinks, storing and absorbing carbon dioxide, respectively.
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