CONTENTS:- 1. Ecology and Environment. 2. Fundamentals of Ecosystem. 3. Biodiversity and its Conservation. 4. Renewable Energy Resources. 5. Environmental Pollution and Water pollution. 6. Air and Air Pollution. 7. Soil and Soil Pollution. 8. Environmental Biotechnology. 9. Environmental Toxicology. 10. Environmental Microbiology. 11. Solid Waste and its Management.