You are presented with the quiz "Biomass is the total mass of organisms on a level such as what" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "biomass is the total mass of organisms at a trophic level" and "herbivores are the second trophic level and graze on plants". 

So, what's the best answer to the question?


 

     herbivores      