Who demonstrated that five closely related species of warblers living on the same tree were able to avoid competition and coexist?

In an association of two animal species,one is a termite which feeds on wood and the other is a protozoan $Trichonympha$ present in the gut of the termite. What type of association do they establish?

Which statement is incorrect regarding predators?

Explain predation in detail.

Which one of the following is $NOT$ an example of commensalism?

Identify the type of population interaction in which both interacting species benefit.