: The 13th edition (2024-25) is available for purchase through retailers or academic portals like IAS Exam Portal Key Content Covered According to academic syllabi, the book typically includes: Ecological Factors : Light, temperature, water, and soil. Community Ecology : Structure, dynamics, and succession. : Air, water, and waste management. Conservation : Biodiversity hotspots and IUCN categories. specific chapter or topic from this book for your studies? AI responses may include mistakes. Learn more Ecology and Environment by PD Sharma PDF Free - Scribd