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...Ncert solutions for class biology chapter ecosystem exercise page no fill in the blanks a plants are called as because they fix carbon dioxide b an dominated by trees pyramid of numbers is type c aquatic ecosystems limiting factor productivity d common detritivores our e major reservoir on earth solution autotrophs inverted light earthworms oceans which one following has largest population food chain producers primary consumers secondary decomposers form include microbes such bacteria and fungi that derive their nutrition disintegrating remains animals dead second trophic level lake phytoplankton zooplankton benthos fishes forms feeding upon hence hold herbivores carnivores none above there only synthesize own through process photosynthesis what percentage photosynthetically active radiation par incident solar or constitutes about total distinguish between grazing detritus production decomposition upright web litter f differences follows energy derived from sun organic matter produced ...