Answer:
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.
Answer:
Ecophysiology is a biological discipline that studies the response of an organism's physiology to environmental conditions. It is closely related to comparative physiology and evolutionary physiology.
A safety symbol is a sign or symbol on an object to show whether it can affect our bodies negatively. this is also a warning sign to people in the laboratories
The answer is D, all of the above are producers.
