About the Book: This book is suitably designed for Polytechnic students of N-E, region in particular and in general for students all over India with the intention of fulfilling the mission of promoting environmental education and culture, as well serves as a textbook for full time courses in the educational institutions. The book introduces the basic concepts of environment, its physical features and human intervention factors in environment and also explains its various dimensions-ecology, air, water, soil and radioactive pollution, public health, resource conservation and management, enviro |