Unit 8 · Environmental Biology
What ecology studies, the levels of ecological organisation, abiotic and biotic factors, habitat and niche, limiting factors and tolerance, and adaptations of organisms to their environments.
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.