Environmental Studies – as a compulsory paper for undergraduate students of all disciplines – introduces the fundamental principles and concepts of environmental science, ecology and related interdisciplinary topics like policy, law, pollution control, economics and natural resource management. This textbook of Environmental Studies covers a wide range of concepts and issues including biodiversity, global warming, acid rain, ozone layer depletion, nuclear accidents, nuclear holocaust, disaster management, etc. Focusing on the immediate need for public awareness, it discusses the use and manipulation of various natural resources such as water, land, forests, food and mineral resources and the problems associated with natural resource management. It also analyses different types of ecosystems, biogeochemical cycles and the laws of thermodynamics with easy-to-understand examples. In addition, the book has separate chapters on various types of environmental pollution and waste management including waste water treatment, solid waste management and green management.