Compare and contrast gas exchange in lungs,gills and trachea. Give an example of a taxon that uses each. Describe the main components of each respiratory system, and explain how the exchange surfaces are similar and how they differ. Describe the medium within which gas exchange must occur, and the benefits and drawbacks of having to exchange gases within eachmedium. Explain how each of these respiratory systems is adaptivefor the organisms that use them. Explain one limitation inlifestyle and / or body size that may exist for organisms'using each form of gas exchange. Finally, describe one specialadaptation found in for each respiratory organ (gill, lung andtrachea) that can improve its gas exchange capability.