the primary function of red blood cells (RBCs) is to transport oxygen throughout the body, which is essential for sustaining life. Their higher abundance compared to white blood cells (WBCs) reflects the body's need for a significant number of RBCs to efficiently deliver oxygen and remove carbon dioxide. In contrast, WBCs are involved in immune responses and are present in smaller numbers as they respond to specific threats and infections. This disparity in cell counts highlights the different roles and requirements of these two types of blood cells in maintaining homeostasis.
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