This book on Environment is meant for students preparing for the Preliminary and Main papers of the Civil Service Examination. It offers definite and concrete content with precise approach study material on various aspects of Environmental studies based on the broad syllabi and direction provided in the syllabus of the civil services examination. The subject of environment and biodiversity is vast and interdisciplinary. To cater the diverse topics a comprehensive book was conceived. The range and scope of the content is such that it will be useful for various other competitive examinations where questions on environment, ecology, biodiversity, climate change, disaster management etc. are also asked. Key Features: 1. Meant for Preliminary and Main Examination 2. Covers basic to advanced level within each topic – helpful for non-science background students 3. Explicit content on recent developments and current events linked with static topics as per the requirement of the examination 4. Questions of 2018 Preliminary paper with answers given in the book. About The Author - Prof. D R Khullar holds a Masters degree from Punjab University, Chandigarh and retired as a Principal, Government Post Graduate College, Kalka (Haryana) in 1998 after serving in different colleges of Haryana and Punjab. He has authored more than 40 books on different aspects of Geography and allied subjects. His knowledge on the subject has received an unprecedented response world over. Mr. J.A.C.S. Rao holds a Masters degree in Biochemistry from Andhra University, Waltair, Andhra Pradesh. Later he completed M.A. Sociology from G.G.U., a central university in Bilaspur. He joined Indian Forest Services (I.F.S.) in 1987 and was allotted Chhattisgarh Cadre and has held several posts in the Forest Department. Since Mr. Rao has worked widely in the field of Agriculture, Horticulture, Animal Husbandry, Fisheries etc. he has written several articles, books and booklets on the same. He also has a wide teaching experience in various institutions.