When a person's respiratory rate is slower than normal, certain conditions, such as bradypnea or apnea, may occur. Bradypnea is characterized by abnormally slow breathing, and may be the symptom of a metabolic disorder or a tumor.
classification, Modern classification is part of the broader science of. taxonomy, the study of the relationships of organisms, which includes collection, preservation, and study of specimens, and analysis of data provided by various areas of biological research.
1 It is used to categorize information. Whereas the Library of Congress classification system is used to classify publications held by a library, taxonomy structure for an organization is used to categorize enterprisewide information.  It is an integral part of a content management system.