What shape does the biomass pyramid take due to the inefficiency of energy transfer?

Answer

Widest at the bottom (producers) and tapering sharply toward the top.

The biomass pyramid reflects the energy loss constraint; because energy is lost at every transfer, the greatest biomass is found at the lowest trophic levels (producers), leading to a sharp tapering shape towards the top.

What shape does the biomass pyramid take due to the inefficiency of energy transfer?
EcologyEcosystemenergyfood webtrophic level