Epidemiologists are public health professionals who investigate patterns and causes of disease and injury in humans. They seek to reduce the risk and occurrence of negative health outcomes through community education and health policy.hey are often involved with education outreach and survey efforts in communities. Research epidemiologists typically work for universities or in affiliation with federal agencies such as the Centers for Disease Control and Prevention (CDC) or the National Institutes of Health (NIH).
Death by natural causes. From Wikipedia, the free encyclopedia. A death by natural causes, as recorded by coroners and on death certificates and associated documents, is one that is primarily attributed to an illness or an internal malfunction of the body not directly influenced by external forces.
Education: Geography. One can calculate the natural increase by subtracting the death rate per 1000 population from the birth rate per 1000 population: natural increase = birth rate-death rate.