As you have learned in class, drag is a force that resists t…

As you have learned in class, drag is a force that resists the forward motion of a body (such as a chondrichthyan’s body) as it moves through a medium (such as water). Which of the following types of drag is produced because the medium “sticks” to the surface of the body in motion?

Marine chondrichthyans must perform several physiological ta…

Marine chondrichthyans must perform several physiological tasks that enable them to survive in saltwater (marine) environments. Which of the following is NOT one of the approaches that a marine chondrichthyan would perform in order to survive in a marine habitat?

The graph below shows tag-and-recapture data for a deepwater…

The graph below shows tag-and-recapture data for a deepwater species of shark known as the night shark (Carcharhinus signatus).  Based on these data, what would be your conclusion about population structure of this species in the western North Atlantic (WNA) and Gulf of Mexico (GOM)?