Which of the following is an example of a positive interaction in a population?

Which one is not a characteristic of predation?

Despite interspecific competition in nature, which mechanism might competing species have evolved for their survival?

What is the type of interaction between a sucker fish (Remora) and a shark?

Which one of the following is $NOT$ an adaptation found in endoparasites?

Many parasites have evolved to be $A$ in such a way that both host and the parasite tend to $B$; that is,if the host evolves special mechanisms for rejecting or resisting the parasite,the parasite has to evolve mechanisms to $C$ and neutralize them,in order to be successful with the same host species.
Choose the correct option for $A$,$B$,and $C$.