Unit 5 · Animal Form and Function
Why larger animals need a transport system, and how open and closed, single and double circulation differ, from insects and fish to birds and mammals.
Deshapriya Senevirathne. B.Sc. (Hons) Biology Special, University of Peradeniya — graduated with a class pass. All the content and lessons in A/L Biology on Paadama are reviewed by Deshapriya Senevirathne, and the lessons are taught by him.