Chapter 13: Our Environment serves as the concluding chapter, focusing on ecology and environmental issues. It introduces the concept of an Ecosystem and its biotic and abiotic components. Students learn about food chains and food webs, understanding the flow of energy (10% Law) across trophic levels.
[Image of food web]
The chapter addresses the problem of Biomagnification, where toxins accumulate in higher trophic levels. Key environmental challenges like Ozone Layer Depletion (caused by CFCs) and Waste Management (biodegradable vs. non-biodegradable waste) are discussed, encouraging students to adopt sustainable practices.
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