Mucous Membrane - The moist linings of body passages and internal cavities involved with absorption and secretion of substances.⏎
Infectious Disease - A type of illness caused by a pathogenic agent, including viruses, bacteria, fungi, protozoa, parasites, or abnormal proteins known as prions.⏎
Habitat - The specific geographical area or physical environment that is inhabited by an organism or a population of organisms.⏎
Mortality - The number of deaths in a given time or place.⏎