You are presented with the question "what is biomass the total mass of?" and the following answer choices: 
- remains of prehistoric life
 - nutrients
 - dead weight
 - organisms on the food chain
 - Microscopic organisms
 - h2o
 - sub-units of species
 - The number of individuals

Now knowing that biomass is the total mass of organisms at a trophic level and trophic level refers to the organisms position in the food chain, choose the best answer.


 

    organisms on the food chain     