Study Materials (PDF)
U18 · Environment, Ecology, Biodiversity and Climate Change – UPSC Civil Services (Prelims & Mains)
24 chapters · 701 MCQs incl. UPSC Prelims PYQs with a reason for every option · 120 Mains questions + Mains PYQs · maps, tables, revision cards
- Environment, Ecology, Biodiversity and Climate Change for the UPSC Civil Services Examination (Prelims and Mains, Prelims GS Paper I · Mains GS Paper III). Ecology and Ecosystems, Biodiversity and Protected Areas, Pollution and Degradation, Environmental Laws and EIA, Climate Change, International Conventions and Sustainable Development. Every chapter quotes the official UPSC syllabus lines it covers and gives an Exam Radar, a mind map, clear notes with maps, diagrams and quick-revision tables, UPSC Prelims previous-year questions placed with their topic, original MCQs with a reason for every option, UPSC Mains previous-year questions (2013–2025), Mains practice questions with model-answer outlines and a 60-Second Revision Card. Two-stage expert review of every fact and answer key. Instant download after payment; licensed PDF with your name.
- Chapters:
- 1. Ecology and Ecosystems – Basic Concepts
- 2. Ecosystem Functions – Energy Flow, Food Chains and Nutrient Cycles
- 3. Terrestrial Ecosystems and Biomes
- 4. Aquatic Ecosystems – Wetlands, Mangroves and Coral Reefs
- 5. Biodiversity – Levels, Values and Hotspots
- 6. Threats to Biodiversity and Invasive Species
- 7. Flora and Fauna of India – Threatened Species
- 8. Protected Areas – National Parks, Sanctuaries and Biosphere Reserves
- 9. Species Conservation Programmes
- 10. Air Pollution
- 11. Water Pollution and Water Quality
- 12. Soil Pollution and Waste Management
- 13. Land Degradation, Desertification and Deforestation
- 14. Environmental Laws in India
- 15. Environmental Institutions and the Courts
- 16. Environmental Impact Assessment
- 17. Forests – Policy, Rights and Afforestation
- 18. Climate Change – Science and Impacts
- 19. The Global Climate Regime – UNFCCC to Paris
- 20. India's Climate Policy – NAPCC, NDCs and Carbon Markets
- 21. Ozone Depletion, Acid Rain and Atmospheric Issues
- 22. International Environmental Conventions
- 23. Environmental Organisations, Reports and Indices
- 24. Sustainable Development and Sustainable Agriculture
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📝 Free practice quizzes from this book (answer + one-line explanation)
- UPSC Environment and Ecology – Chapter 1: Ecology and Ecosystems – Basic Concepts (31 MCQs)
- UPSC Environment and Ecology – Chapter 2: Ecosystem Functions – Energy Flow, Food Chains and Nutrient Cycles (32 MCQs)
- UPSC Environment and Ecology – Chapter 3: Terrestrial Ecosystems and Biomes (32 MCQs)
- UPSC Environment and Ecology – Chapter 4: Aquatic Ecosystems – Wetlands, Mangroves and Coral Reefs (33 MCQs)
- UPSC Environment and Ecology – Chapter 5: Biodiversity – Levels, Values and Hotspots (34 MCQs)
- UPSC Environment and Ecology – Chapter 6: Threats to Biodiversity and Invasive Species (25 MCQs)
- UPSC Environment and Ecology – Chapter 7: Flora and Fauna of India – Threatened Species (34 MCQs)
- UPSC Environment and Ecology – Chapter 8: Protected Areas – National Parks, Sanctuaries and Biosphere Reserves (34 MCQs)
- UPSC Environment and Ecology – Chapter 9: Species Conservation Programmes (29 MCQs)
- UPSC Environment and Ecology – Chapter 10: Air Pollution (32 MCQs)
📰 Current affairs on this subject
- Tamil Nadu State Board for Wildlife reconstituted: CM chairs, Forest Minister vice-chair, 3 MLAs as members
- Bihar – first State with a comprehensive Silt (Sediment) Management Policy; NHAI–Bihar MoU under 'Nadi Sanjeevani'
- Tamil Nadu's 3 Biosphere Reserves: Nilgiri (1986), Gulf of Mannar (1989), Agasthyamala (2001)
- Mains Analysis: Rajasthan's Poisoned Rivers – Industrial Pollution and the Limits of State Capacity
- Mains Analysis: The Loss and Damage Fund – Climate Justice Needs Speed, Not Just Money
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