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A great video lecture conducted by experienced biology teacher on 12th class biology chapter 25 topic1 biogeochemical cycles. Get full understanding or ask any questions.

Biogeochemical Cycle, ch 25, lec 4, Biogeochemical Cycles - Inter Part 2 Biology

10:01

Stage of Zero-sere Succession, ch 25, lec 4, Biogeochemical Cycles - Inter Part 2 Biology

11:56

The Flow of Energy in Food Chain, ch 25, lec 4, Biogeochemical Cycles - Inter Part 2 Biology

2:59

Nitrogen Depletion, ch 25, lec 4, Biogeochemical Cycles - Inter Part 2 Biology

3:56

Biogeochemical Cycles, ch 25, lec 4, Biogeochemical Cycles - Inter Part 2 Biology

6:36