Question is on the image

A and D.

Explanation:

Sharks gills are located on the side of their bodies while on the other hand, Skates have gills that are located in underneath of their mouth. In sharks , large spiracles are present on the ventral sides of shark's head whereas in Rays or Skates, spiracles are large in size and located on the dorsal side of their head. Spiracles is an external respiratory opening, located behind the eye of a cartilaginous fish.

and after water is usually warmed by the sun the water temperature raises and then evaporates .

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.