8. Complex system call :
a) a system in which an isolated consideration of subsystems impossible or leads to erroneous conclusions ;
b) a system which consists of a plurality of elements;
c) such a system in which subsystems are also be regarded as complex .
Complex system call a system which consists of a plurality of elements. It consists of elements and their strong coordination of processes. Each element has its own role and can bring the highest effect by coordination with other elements