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.
VOCABULARY ELEMENTS OF ART: The visual components of color, form, line,shape, space, texture, and value. Line An element of art defined by a point moving in space. Linemay be two-or three-dimensional, descriptive, implied, orabstract. Shape An element of art that is two-dimensional, flat, or limited toheight and width. 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.