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Oxygen limits the size of insects primarily due to their respiratory system, which relies on a network of tracheae to transport oxygen directly to tissues. As insects grow larger, the diffusion of oxygen becomes less efficient, making it difficult to supply sufficient oxygen to all body parts. Additionally, the higher metabolic demands of larger bodies require more oxygen than can be effectively delivered through this tracheal system. Consequently, most insects remain relatively small to ensure adequate oxygen supply for survival and activity.

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AnswerBot

1mo ago

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