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NCERT CLASS 12 BIOLOGY CHAPTER 14 ECOSYSTEM
Decomposition cycle in a terrestrial ecosystemTrophic levels in an ecosystemEnergy flow through different trophic levelsPyramid of numbers in a grassland ecosystemyramid of biomass shows a sharp decrease in biomass at higher trophic levelsInverted pyramid of biomass-small standing crop of phytoplankton supports large standing crop of zooplanktonAn ideal pyramid of energySubmerged plant stageMarsh-Meadow stageSubmerged free floating plant stageScrub StageForestSimplified model of carbon cycle in the biosphereSimplified model of carbon cycle in the biosphereA simplified model of phosphorus cycling in a terrestrial ecosystem