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Animals with a small surface to volume ratio without specialized oxygen distribution systems face challenges in supplying oxygen efficiently to all cells, necessitating specialized respiratory organs in larger animals for effective oxygen transportation.
When an animal with a small surface to volume ratio does not have specialized systems for oxygen distribution, it can face challenges in supplying oxygen to all cells efficiently. As the organism grows larger, its volume increases more rapidly than its surface area, making it harder for oxygen to reach inner cells through diffusion alone.
This is why larger animals have evolved specialized respiratory organs like lungs and gills, along with circulatory systems, to ensure effective oxygen transportation throughout the body.
Without these adaptations, cells in larger animals would struggle to receive sufficient oxygen to support their metabolic functions, leading to potential health issues or even death.
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