Why Saprophytes are not included in pyramids?

Saprotrophs are organisms which feed on dead and decaying matter and these pyramids exhibit interaction between the living components and since decomposers interact with dead organisms at all levels, its very hard to assign them trophic levels.

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saprophtes obtain their food in soluble form .they are also microscopic like fungi and bacteria and they do not expend much energy so they are not included in pyramids

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it was quite satisfactory answer

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