ive entropy (from complex to simple, simplification of systems). New system is formed for the account of reduction of compositional structure of its elements. This process releases energy and elements from the structure. Both modes are used for the creation of new systems with the new goals. In the first case complexification of systems takes place, while in the second one their simplification or destruction occurs. Structural regeneration (the third mode of reorganization) is used for the conservation and restoration of the systems 'structure. It is used in the form of metabolism, but at that, the system and its goals remain unchanged. Energy and inflow of substances for the SFU restoration is required for this process. Functional regeneration (the fourth mode of reorganization) is used for the operation of systems as such. The principle of the systems 'functioning resembles generation and degeneration processes. In process of accretion of functions the system includes the next in turn SFU ostensibly building a new, more powerful system with larger number of elements (Generation). During the reduction of capacity of functions the system deactivates the next in turn SFU as if it means to build a new system with fewer number of elements (degeneration). But these are all reversible changes of the system arising in response to the external influence which are effected for the account of the change of the condition of its elements and the use of DPC, NF and effectors. At that, the system's structure kind of alters depending on its goal. New active and passive (Reserve) SFU appear in it. This process requires energy and flow of substances for energy recovery, but not necessarily requires a flow of substances for the restoration of SFU. How does the organization (structuring) of system occur? Who makes decision on the organization or reorganization of systems? Who builds control block of the new or reorganized system? Who gives the command, the task for the system? Why is the NF loop built for meeting the given specific condition? Before we try to answer these questions, we will note the following. First, there is a need in the presence of someone or something "interested" in the new quality of the result of action who (or which) will determine this condition (set the goal) and construct the control block. Someone or something "Interested" may be the case coupled with natural selection, whereby by way of extensive arbitrary search corresponding combinations of elements and their interactions may emerge that are the most sustained/lasting in the given conditions of environment. Thus, the environment/medium sets condition and the incident builds the systems under these conditions. At this point we do not consider the conditions in which generation or degeneration occurs and which are associated with redundancy or lack of energy (with positive or negative entropy). We only consider the need and expediency of creation of ...