Unit 8 · Environmental Biology
Primary and secondary succession, the stages from pioneer species to the climax community, how communities change, and examples from Sri Lankan rocks, chena land, tanks and dunes.
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.