Sarcoidosis of the scalp presents with diffuse or patchy hair loss. There may be linear or patchy red lesions. They tend to forage in patchy clearings of forests. The ground is bare with a patchy cover of lichens and mosses. Affected individuals may have a patchy or assymmetric appearance. The major sources depicting the life and rule of Marcus are patchy and frequently unreliable. Plain chest radiography shows normal lung volumes, with characteristic patchy unilateral or bilateral consolidation. This is not always the case (e.g. patchy fog). German propaganda efforts designed to win over Russian opinion were, at best, patchy and inconsistent. Engineers have brown fur, while Mediators have patchy fur in brown and white. Such distributions might be patchy, or extended, but narrow. Africa has a rich fossil record, but it is patchy and incomplete. This type of distribution is found in environments that are characterized by patchy resources. Artificial eyebrows are available to replace missing eyebrows or to cover patchy eyebrows. Planning policy prioritizes the development of existing town centres, although with patchy success.