Question

what is Energy pyramid?which are the different components

Answer 1

An energy pyramid is a graphical model of energy flow in a community. The different levels represent different groups of organisms that might compose a food chain. From the bottom-up, they are as follows:Producers — bring energy from nonliving sources into the community.

Answer 2

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An ecological pyramid is a graphical representation designed to show the biomass or bio productivity at each trophic level in a given ecosystem. Biomass pyramids show how much biomass is present in the organisms at each trophic level, while productivity pyramids show the procreation or turnover in biomass. 
Primary producers (plants, algae) decomposers (worms, fungi) Primary consumers (herbivores) Secondary consumers (carnivores) Trimary consumers (carnivores) usually stops there because of energy loss