Answer the following question given this paragraph: 

The different feeding positions in a food chain or web are called trophic levels. Generally, there are no more than four trophic levels because energy and biomass decrease from lower to higher levels.


Q: What are the different feeding positions in a food chain or web called?


A:
trophic levels
The paragraph describes that trophic levels define the different feeding positions in a food chain or web. These are generally no more than four because energy and biomass decrease from lower to higher levels.
Therefore, we can conclude that answer is Trophic Levels.