Moroccans descended from Berbers, Arabs, and Black Africans exactly like the neighboring Maghrebians. The Berbers are the prehistoric populations of Morocco and are related to the wider group of Paleo-Mediterranean peoples. The Afroasiatic family may have originated in the Mesolithic period, perhaps in the context of the Capsian culture.
Epidemiologic triangle model of disease causation. A common model used in public health illustrates the relationships among an agent, a host and the environment. It applies to biological, chemical and physical agents.
epidemiology - The study of patterns of disease in a population. epidemiology - the study of the patterns, causes and control of disease in groups of people. epidemiology - Study of factors that influence the health and disease of a population and the use of this information to study diseases and improve the health of the population.