Nature of Phenomena within a System

Nature of Phenomena within a System (under Study)

1. Time (Variations) (we may consider space too.)
2. Sources and Sinks (internal and external)
3. Transport
4. Reservation
5. Converters, Elements and Medium 

Elements

1. each system element does a task with one of the previous natures listed

Components

1. Energy (and force)
2. Matter: matter serves both as the system(something under study) and also serves as elements, medium and converters