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A. draw the diagram of human respiratory system and labels the following parts: 1. Part where air filtered by fine hair and mucus 2. Part which terminates

in balloon like structure 3. Balloon like structures where exchange of gases takes place. 4. Part which separates where chest cavity from abdominal cavity B. why is the rate of breathing in aquatic organisms much faster than terrestrial organisms?



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The amount of oxygen dissolved in water is fairly low as compared to the amount of oxygen in the air. Aquatic organisms obtain oxygen from water present in dissolved state through their gills hence the rate of breathing in aquatic organisms is much faster than that seen in terrestrial organisms
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