Dr Rana Hamza Shakil thank you for your contribution to the discussion

Pyramids of energy are often very similar to biomass pyramids. The energy content at each trophic level is generally comparable to the biomass. Pyramid of biomass and pyramid of energy are two of the three types of ecological pyramids. Both represent trophic levels in an ecosystem. The key difference between pyramid of biomass and pyramid of energy is that a pyramid of biomass shows how much biomass is present in the organisms of each trophic level while a pyramid of energy shows how much energy is retained in the form of new biomass at each trophic level.The shape of the biomass pyramid in any ecosystem depends on a number of factors. If the amount of biomass in a trophic level depends on the amount of energy entering that trophic level, then, all else being equal, the biomass pyramid should have the same shape as the energy pyramid. Pyramids are the shape they are due to the fact that energy is lost at each trophic level. Only a fraction of the energy in a trophic level is available to be passed on in the food chain. For example, plants absorb light energy to make food by photosynthesis. The shape of the energy pyramid shows that there is enough biomass energy contained in the primary producers at the bottom to support the predators at the top, even though energy is lost at each level.Energy pyramid depicts flow of energy in the ecosystem: source of all energy in ecosystem is the SUN. Producers are only organisms in ecosystem that can trap the solar enrgy. So base of energy pyramid is always wide. A biomass pyramid shows the total dry mass of all living organisms at each trophic level. A biomass pyramid is the representation of total living biomass or organic matter present at different trophic levels in an ecosystem. Biomass is calculated as the mass of living organisms present at each trophic level in a given sample size. The pyramid of biomass can be upright or inverted, but pyramid of energy is always upright. They have similar proportions because in energy pyramids, energy is released for every level thereby having a smaller apex and a larger base. In biomass pyramids, the apex represents the smallest size of mass while the base shows the largest mass thus resulting also in a pyramid.