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GyanMul Prep · NEB +2 · Science · Grade 11

Biology (Science, Grade 11)

Everything on these tabs is Biology (Science, Grade 11) only, within NEB +2 Science · Grade 11.

Science · Grade 11 subjects

GyanMul Prep · NEB +2 · Science · Grade 11

Biology (Science, Grade 11)

Everything on these tabs is Biology (Science, Grade 11) only, within NEB +2 Science · Grade 11.

Science · Grade 11 subjects

Chapter 19 of 32 · Biology (Science, Grade 11)

Ecological Imbalance

3 topics
Board exam — Ecology, 6 marks across 3 chapters
26 solved questions

What goes wrong and why it matters locally — pollution, deforestation, greenhouse effect and ozone depletion, with the consequences a Nepali example makes concrete.

Practise this chapter Read solved questions

Topics

What the syllabus defines for this chapter

1Pollution — air, water, land
2Deforestation and its consequences
3Greenhouse effect, global warming and ozone depletion