The second edition of Ravi P. Agrahari's Environmental Ecology, Biodiversity, Climate Change, and Disaster Management has undergone a comprehensive revision to better serve the needs of students taking the UPSC Preliminary and Main exams. This book gives its readers an appropriate comprehension of the subject while acclimating them to the test pattern with its logically organised content, clear writing, and addition of flow charts, diagrams, and maps. It covers all facets of environmental ecology, biodiversity, and climate change at all levels, making it simpler for students without a background in science to understand and remember.This book is a readymade amalgamation of basic concepts intertwined with current developments in the various fields which makes it a ?must-have? for the UPSC aspirants. Salient Features: 1. All Topics aligned as per the previous examination trends 2. Covers 2013-2021 Mains Questions with Explanations in both Part A on Environment and Part B on Disaster Management 3. Dedicated section on PYQs from UPSC and other competitive examinations 4. Covers General issues and Current events of national and international importance on relevant topics picked upon thorough analysis of UPSC examinations pattern on the subject 5. Refresher List on Wildlife, Biosphere Reserves, Sanctuaries, Heritage sites and other relevant Lists from related statutes like Indian Wildlife (Protection) Act, 1972.