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.
Form An element of art that is three-dimensional and enclosesvolume; includes height, width AND depth (as in a cube, asphere, a pyramid, or a cylinder). Form may also be freeflowing. Value The lightness or darkness of tones or colors. White is thelightest value; black is the darkest.orm An element of art that is three-dimensional and enclosesvolume; includes height, width AND depth (as in a cube, asphere, a pyramid, or a cylinder). Form may also be freeflowing. Value The lightness or darkness of tones or colors. White is thelightest value; black is the darkest.