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The document provides information about ecosystems, their components, trophic levels in a food chain, and the ozone layer. 2. The main components of an ecosystem are biotic factors like plants and animals, and abiotic factors like air, water, and land. Producers, consumers, and decomposers all interact within an ecosystem. 3. CBSE Class 10 Science Chapter 15 Our Environment Notes . Our Environment Question Answers and Video Explanation. Our Environment class 10 Notes Science chapter 15 in PDF format for free download. Latest chapter wise notes for CBSE board exams. Food web → In nature large numbers of food chains are interconnected forming a food web. • Environmental problems: Changes in the environment affect us and our activities change the environment around us. Human activities leads to pollution, deforestation etc.
