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Welcome to eGyanKosh, your premier resource for comprehensive educational materials. In this section, we delve into Unit-1: The Hydrologic Cycle and Hydrometeorology, tailored for IGNOU’s 2025 curriculum. This study material provides a thorough exploration of the fundamental processes governing water movement, distribution, and quality in our environment, along with the intricate relationship between atmospheric phenomena and hydrological systems. Whether you’re a student or a lifelong learner, you can freely download this valuable resource to enhance your understanding and excel in your studies. Dive into the fascinating world of hydrology and meteorology with us!