Where microbes live in soil, mineralisation, their part in the carbon cycle, the four steps of the nitrogen cycle, the rhizosphere, mycorrhizae and endophytes, and soil aggregates.
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.