<p>in the last episode I talked about the need for exchange surfaces. In this episode, we move on to describing the common features of all gas exchange surfaces.</p>

in the last episode I talked about the need for exchange surfaces. In this episode, we move on to describing the common features of all gas exchange surfaces.

Y1E2 Features of gas exchange surfaces

Audio version of my new series of A level biology YouTube videos covering the new (2015) specification. I discuss familiar concepts in-depth, in the hope that a better understanding will make it easier to learn and make you a Jedi master of the subject.

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Y1E2 Features of gas exchange surfaces

Y1E2 Features of gas exchange surfaces