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Welcome to the eGyanKosh portal, your ultimate resource for comprehensive study materials on the “Interaction of Microbes with Environment” for IGNOU 2025. This Block-4 module delves into the intricate relationships between microorganisms and their surroundings, exploring how these interactions impact ecosystems, human health, and environmental sustainability. Designed for students seeking to enhance their understanding and academic performance, this material is available for free download, ensuring that quality education is accessible to all. Engage with insightful content that empowers you to navigate the complexities of microbial interactions, fostering a deeper appreciation for the vital role these organisms play in our world.