2:H:1 A healthy economy requires access to a resource base.
2:H:2 Primary manufacturing is important since it supports other producing units in the system.
2:H:3 Secondary manufacturing is the balance between primary and tertiary production systems.
2:H:4 Tertiary manufacturing is desirable since it contains the highest level of employment of the three productive systems.
2:H:5 Services are essential to supporting a productive system… including educational and recreational operations.