[Solved] Prokaryotic cells are ____. A) found only in extreme habitats B) the least common organisms on Earth C) easily seen with the naked eye D) stationary organisms E) widespread on the planet Infectious Disease Rates: The prevalence or incidence of diseases caused by pathogens (bacteria, viruses, fungi, or parasites) in a specific population over a given period of time. Schizophrenia: A chronic mental disorder characterized by periods of psychosis, including delusions and hallucinations. Lightly Populated Areas: Regions or territories that have low population density, meaning there are few people per unit area of land. Hallucinations: Perceptions in a conscious and awake state in the absence of external stimuli, which have qualities of real perception.