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GS Geography Physical Geography of World
Q.

How many types of ecological pyramids are present in ecosystem?
Explanation:

ANS. (B) 
An ecological pyramid is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem. Biomass is the amount of living or organic matter present in an organism. There are three ways to represent the trophic levels in an ecological pyramid: the amount of organisms (number), the mass of all the organisms in each level (biomass), or the amount of energy contained in each level.

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