Unit 4 • Class 7Science and Technology (Sci.071)
Unit 4: Biodiversity and Environment (जैविक विविधता र वातावरण)
एकाइ ४: जैविक विविधता र वातावरण
Ecosystem components (biotic and abiotic), food chain, food web, trophic levels, ecological balance, deforestation impacts, and conservation of national parks in Nepal (p. 117-146).