Mononucleosis, commonly called mono, is an illness caused by the Epstein-Barr virus. Although it's rarely serious, mono can cause bothersome symptoms that last several weeks.
Complex systems. Complex systems present problems both in mathematical modelling and philosophical foundations. The study of complex systems is an approach to science that investigates how relationships between parts give rise to the collective behaviors of a system and how the system interacts and forms relationships with its environment.
The study of the environment. Ecology(odum 1953) is the study of the distribution and abundant of might be of an organism. ecology is the branch of biology that deals with the interrelationship amongst organisms & interaction between the organisms & their environment.... this term ecology was coined by ERNEST HACKEL.