Notoedric mange, a disease caused by mites, becomes epidemic in western gray squirrel populations and is a major source of mortality. Other species of eastern gray squirrels, fox squirrels, California ground squirrels and wild turkeys are expanding and compete with the western gray.
Principles of Design. Unity/Harmony. Definition of Unity: occurs when all of the elements of a piece combine to make a balanced, harmonious, complete whole. Unity is another of those hard-to-describe art terms but, when it's present, your eye and brain are pleased to see it. Definition of Harmony: brings together a composition with similar units.
Definition: (noun) - As a basic principle of art (specifically of design), the definition of balance refers to the ways in which the elements (lines, shapes, colors, textures, etc.) of a piece are arranged. Balance is one of those useful terms to know, if one is to employ Art Speak.