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AdaptGasExchange Hangman

 
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Question Answer
gas exchange  diffusion of oxygen into the body and co2 out  
Which organisms exchange gases using moist skin  adult amphibians and cnidaria  
Which organisms exchange gases using tracheal system  insects and arachnids  
Which organisms exchange gases using lungs  mammals birds and reptiles  
Which organisms exchange gases using gills  fish crustacea juvenile amphibians  
why must gills have a larger surface area than the lungs of similar sized animal  less oxygen in water