Biomass is the total mass of organisms at a trophic level, and herbivores are the second trophic level and graze on plants. Given these facts, biomass is the total mass of organisms on a level such as what among the following options:
- Energy
 - trees
 - Energy.
 - bottom of feet
 - herbivores
 - kinetic energy
 - animals
 - energy usage


 

     herbivores    