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Welcome to the eGyanKosh resource page for Unit-17: Heat and Cold Waves! As part of the IGNOU 2025 curriculum, this comprehensive study material provides students with an in-depth understanding of the phenomena associated with extreme temperatures, including their causes, effects, and implications for both the environment and human life. Whether you’re preparing for exams or seeking to enhance your knowledge in meteorology and climate studies, our free downloadable resources are designed to support your academic journey. Explore the rich content and tools available to help you excel in your studies of heat and cold waves.