Brood parasitism is observed in which of the following?

What is the relationship between the $Ophrys$ orchid and the male bee?

Which of the following interactions correctly describes the relationship between the sea anemone and the clownfish?

Why does no predator become perfectly efficient at acquiring prey?

Statement-$I$: In the absence of predators,prey species population can decline and cause ecosystem instability.
Statement-$II$: Predators are prudent in nature and overexploit their prey.

Biological control methods adopted in agricultural pest control are an example of which interaction?