Unit 5 · Animal Form and Function
How cigarette smoke, silica and asbestos dust, TB and asthma harm the respiratory system, and the respiratory cycle with its four volumes and four capacities.
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.