Exchange of gases takes place in the air sacs contained in the? by Sunday | Jun 27 | Biology WAEC | 0 comments A. I B. II C. IV D. V E. VI Correct Answer: Option C – IV Users Also Read These:The weight of water vapour contained in a given…Air sacs are present in?In a mixture of gases which do not react chemically…The blind sacs at the junction of the small and…A source of sound produces waves in air of…