Answer :
Only 10% of the energy stored as biomass at one trophic level, such as primary producers, is typically transferred to the next trophic level, such as primary consumers.
The required details about biomass is mentioned in below paragraph.
It declines from one trophic level to the next by a factor of ten. In ecology, productivity is the rate at which energy is added to organisms' bodies as biomass. Simply said, biomass is the quantity of material held in a set of organisms' bodies. For any trophic level or other group, productivity can be quantified in either energy or biomass units. When organic molecules from one organism's body are consumed by another, energy can go from one trophic level to the next. But typically, the movement of energy between trophic levels is not very effective.
The rate at which energy is added to organisms' bodies in the form of biomass is known as productivity in ecology.
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