In order to waterproof their feathers, birds may use oil, which they collect from an oil gland (the preen gland) at the base of their tail.

Guano is a waste material produced by birds. It contains uric acid, a white paste that helps the bird’s kidneys to conserve water.

There is only one species of coelacanth alive today.  This species is found in the waters around South Africa.

Which of the following is not a trait that help birds to fly?

Endemic organisms are those with a worldwide distribution. An example of an endemic species is the marine iguana.

Sea turtles have salt glands that help them get rid of the excess salt that they accumulate by feeding and drinking in the marine environment.

Answer the following questions based on the photographs below.  Label your answers with the letters of each question.  Spelling counts. Be very specific. A. Is this a mysticete or an odontocete?  How do you know? B. This is a dorsal view of the cranium of a cetacean. Is this a mysticete or an odontocete?  How do you know? C. What is the name and the function of the structures shown here? D.  Is this a male or a female? How do you know? E. Is this a male or a female? How do you know?      

Which of following signs or symptoms are consistent with the diagnosis of venous stasis ulcer? Select all that apply:1. Peripheral edema2. Brown pigmentation3. Painful ulceration between the toes4. Pink granulation tissue5. Cold and gray-blue color of skin in lower extremities

Sharks that “ram ventilate” only bring water into their gill chambers through the spiracles.

Manatees and dugongs are herbivores that live in shallow coastal areas (e.g., bays). As is typical of herbivores, they have very long intestines.