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Welcome to eGyanKosh’s dedicated page for Unit-12: Major Ecosystems or Biomes of the World, tailored specifically for IGNOU’s 2025 curriculum. This comprehensive study material is designed to enhance your understanding of the diverse ecosystems that shape our planet—including temperate forests, deserts, grasslands, and aquatic biomes. Here, you can access a wealth of resources, including detailed notes, visual aids, and interactive content, all available for free download. Whether you are preparing for your exams or simply looking to deepen your knowledge of global biomes, you’ll find valuable insights to support your learning journey. Dive in and explore the intricate relationships within these ecosystems and their significance to our world!