<span>The medical procedure Cardiac
catheterization that cardiologist or specialist of the heart usually evaluate
heart function and diagnose conditions like cardiovascular. In Cardiac
catheterization, a long small tube called a catheter is inserted into the artery
or vien in the groin, neck or arm. </span>
I think that the answer is behavioral isolation because this isolation helps members of the same species identify each other as mates and that's what the emperor penguins do.They call their mate with a specific sound.I'm not 100% sure tho