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...Download testbook app upsc environmental syllabus for science the union public service commission has released official notification detailed environment and ecology topic is a part of general studies prelims mains considered to be scoring subject it utmost importance aspirants assess their aptitude in particular then pick as an optional here this article we present detail exam pattern best reference books preparation tips ias latest initial starts with thorough knowledge al pdf mentioned below iii sub definition principles scope earth man ecosystems pathways physico chemical biological factors introduction geographical classification zones structure composition atmosphere hydrosphere lithosphere biosphere mass energy transfer across various interfaces material balance first second law thermodynamics heat processes scale meteorology pressure temperature precipitation humidity radiation wind atmospheric stability inversions mixing heights windroses natural resources conservation sustain...