Question

Predators often feed on weak or
sick animals in an ecosystem. The
role of the predator is described as
its ..what? :)

Answer 1

Predators are above all other organisms below it.  Usually as one moves up the

food chain, certain chemicals are concentrated as they move up the food chain.

Examples of this are mercury and PCB.

Answer 2

I THINK the correct answer would be Niche.