Which of the following is true about mammals?

Many bony fishes are broadcast spawners that release their gametes directly into the water.

Countershading is a coloration pattern common to fishes that swim in the upper layers of the ocean (pelagic).  In order to camouflage themselves in this environment, these fishes have a dark belly and a light colored dorsal surface.

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.

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