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In birds the __ is located at the terminal end of the digestive system.

Which two hormones are directly responsible for the physical and behavioral changes that are associated with a female in heat?

Most feather-picking results in feather loss on the

The “true” glandular stomach of a ruminant is the

Which animal has uroliths that resemble sand rather than large stones?

How many eyelids protect the cornea of a bird eye?

The purpose of the gizzard is to

What makes equine urine normally cloudy?

Briefly explain the difference between extrusive and intrusive rocks.  Include textures and origin.

The principle of uniformitarianism states that “the present is the key to the past.”  Briefly explain how geoscientists apply this principle to explain past processes.