Observe the set of $4$ figures $A$, $B$, $C$ and $D$ and, answer the following questions

$(i)$ Which one of the figures shows mutualism ?

$(ii)$ What kind of association is shown in $D$ ?

$(iii)$ Name the organisms and the association in $C$.

$(iv)$ What role is the insect performing in $B$ ?

It is relationship between Ophrys orchid and male bee.

Predators play important role in

A high density of elephant population in an area can result in