Unit 8 · Environmental Biology
Nitrogen fixation, ammonification, nitrification, assimilation and denitrification, the role of bacteria, and the phosphorus cycle with no gaseous phase, with Sri Lankan farming examples.
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.