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The Third Edition of Environment and Ecology is a Complete Guide on these topics for the Civil Services Preliminary and Main Examinations. It will also be useful for those appearing in the Indian Forest Service Examination. New to the Third Edition • Questions (with answers) from the Preliminary Examination papers 2011-2021. • Questions from the Main Examination papers 2011-2021. • Model answers for the Main Examination papers 2021. • Chapter on important environmental organisations rearranged by topic/chapter. • Impact of COVID-19 pandemic on various aspects of the environment. Online Support • Test Series for UPSC Preliminary Examination • Question Bank for UPSC Main Examination • Current Events Updated Every Month