The relationship in an ecosystem can be depicted in

Under what condition does the upright pyramid of biomass become inverted?

Ecological pyramids represent the relationship between the organisms at different trophic levels and they are generally inverted for :

Which of the following is $NOT$ a limitation of an ecological pyramid?

Which of the following statements is not correct?

$A$: Ecological pyramids cannot explain all the vital functions of any ecosystem.
$R$: Pyramids actually do not explain the role of organisms working at more than one trophic level.