Environment and Ecology is truly a Complete Guide on this subject for the UPSC Preliminary and Main Examinations. It will strengthen your conceptual understanding of the subjects, even as it prepares you for the examination. As demanded by the questions asked in the UPSC examination, the book has a strong focus on India, even while it covers the major international issues. It covers government policies, laws, and regulations in a comprehensive manner. This book has been written in a prescriptive manner to facilitate an analytical understating of the topics. Question-answer format has been used to make the learning more interactive and synergistic. Written in simple and lucid language, the book will serve as a comprehensive reference for those appearing in the civil services examination.