Respiration occurs both externally and internally, involving gas exchange with the environment and between the blood and body cells. The correct answer is OA. Certain processes like external respiration take place in the lungs, while internal respiration occurs in the cells. Understanding both aspects is crucial for grasping how organisms function and survive. ;
Respiration occurs at both external and internal levels, making the correct answer A. externally and internally . External respiration takes place in the lungs for gas exchange with the environment, while internal respiration occurs in the cells for energy production. Both processes are crucial for an organism's survival.
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