Respiration is one of the many paths a carbon molecule can take through the carbon cycle.
The biological cycle of carbon depends on two key processes: photosynthesis and respiration.
During respiration, plants and animals use oxygen to release energy from carbohydrates.
Carbon is released back into the air as carbon dioxide. There are two types of respiration: pulmonary respiration and cellular respiration.
Cellular respiration is the use of oxygen and other molecules to burn nutrients and produce energy, a process that occurs in each of the cells of a living organism.
Pulmonary respiration is the process of inhaling and exhaling.
Through lung respiration, many animals, including humans, obtain the oxygen they need to carry out cellular respiration.
The return of CO2 to the atmosphere occurs when living beings oxidize food while breathing, producing CO2.
Therefore, we can conclude that respiration is one of the many paths to a carbon molecule can take through the carbon cycle, which is a biogeochemical cycle of great importance for sustaining life.
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