Respuesta :
I think it is the Excretory System, although I might be wrong.
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Hope I helped, and good luck!
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Hope I helped, and good luck!
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Answer:
Respiratory system
Explanation:
The main function of the respiratory system is to allow the oxygen from atmosphere to enter the blood accompanied by release of carbon dioxide from blood into the air. It includes inhalation and exhalation.
Some organisms such as humans have complex respiratory systems and lungs are the main organs. Other organisms such as earthworms have moist skin with rich supply of blood vessels to serve the function of site of gaseous exchange.