Fact 1: Biomass is the total mass of organisms at a trophic level.

Fact 2: Trophic level refers to the organisms position in the food chain.

Given the two facts above, answer the question "What is a biomass' position in the food chain called?" with the following options: 
- ecosystem
 - more abundant
 - action
 - food swamp
 - Chemical energy
 - Trophic level
 - permineralization
 - It decreases


 

      Trophic level   