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.
Shape and form (visual arts). From Wikipedia, the free encyclopedia. In the visual arts, shape is a flat, enclosed area of an artwork created through line, texture, colour or an area enclosed by other shapes. Likewise, a form can refer to a three-dimensional composition or object within a three-dimensional composition.