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Given the highly scattered, dynamic, and divergent nature of Environment sources, this document systematically segregates UPSC Environment PYQs by aligning them primarily with Shankar IAS Environment and PMF IAS Environment, the two most widely accepted and exhaustive resources for this subject.
Each PYQ has been arranged in a manner that helps aspirants cover Environment with clarity, ease, and confidence, while clearly defining boundaries—what to study, what to revise, and what to avoid.
The document is also source-flexible. While it is aligned with Shankar IAS and PMF IAS, it can be clubbed with any other Environment book or notes, as the segregation is strictly topic-based.