Sika deer of the buck; strong, prime bucks may hold up to . Territories are marked with a series of shallow pits or "scrapes", into which the males urinate and from which emanates a strong, musky odor. Fights between rival males are sometimes fierce and long, and may even be fatal. The gestation period lasts for 7 months. Hinds (does) give birth to a single fawn, weighing , which is nursed for up to 10 months. The fawn becomes independent 10 to 12 months after birth, and attains sexual maturity at 16 to 18 months in both sexes. The sika deer may
The purpose of a system is what it does be balanced by a more straightforwardly descriptive view. The term is used in many fields including biology and management. The purpose of a system is what it does The purpose of a system is what it does (POSIWID) is a systems thinking heuristic coined by Stafford Beer. Stafford Beer coined the term POSIWID and used it many times in public addresses. In his address to the University of Valladolid, Spain, in October 2001, he said "According to the cybernetician, the purpose of a system is what it does. This is a basic dictum. It stands for bald fact, which makes