Q: Passage: Consumers are organisms that eat organisms from a different population. These organisms are formally referred to as heterotrophs, which include animals, some bacteria and fungi. Such organisms may consume by various means, including predation, parasitization, and biodegradation.

Question: Based on this passage, who are the consumers in a food chain?
Let's give stream of consciousness below
To answer the above question, the relevant sentence is: Consumers are organisms that eat organisms from a different population. So the answer is organisms that eat organisms from a different population.