Our Environment
Chapter 13 of the Class 10 NCERT Science textbook steps outside the laboratory to study the living world as one connected system. Learners build food chains and pyramids of number and energy, see how a small loss at each level limits the top carnivores, and trace how pesticides concentrate through biomagnification. The chapter explains the ozone layer and the harm of chlorofluorocarbons, sorts biodegradable and non-biodegradable waste, and asks every reader to reduce, reuse and manage garbage responsibly.
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