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Class 10th Biology Chapter 10 focuses on gaseous exchange, a crucial process for living organisms. It explains how oxygen is taken in and carbon dioxide is expelled, highlighting the significance of this exchange for respiration. The chapter covers various systems in animals and plants that facilitate this process, such as lungs in mammals and stomata in plants. Additionally, it discusses factors that influence the efficiency of gaseous exchange, including surface area, concentration gradients, and diffusion mechanisms. Understanding these concepts is essential for grasping how organisms maintain their metabolic activities and overall health.