Question

explain how the biomass of a species is limited by their trophic level.

Explanation:

Energy transfer between trophic levels is inefficient. Only about 10 - 20% of energy is passed on. Higher - trophic level species have less available energy, thus limiting their biomass as they need more biomass at lower trophic levels to sustain themselves.

Answer:

The biomass of a species at a higher trophic level is limited because energy transfer between trophic levels is inefficient, with only a small percentage of energy being passed on, so there is less available energy to support a large biomass at higher levels.