Unit 8 · Environmental Biology
Sources, effects and control of air, water and soil pollution, indicators of water quality (BOD, indicator species), the process of eutrophication and the biomagnification of persistent pollutants.
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.