Summary

All systems have inputs, outputs and processes.

A simple version of a factory system would be raw materials go in (inputs), they are worked upon and changed (processes) and manufactured goods come out (outputs).

Primary industries extract raw materials, which are natural products untreated by people, from the land or sea.

Secondary industries involve the manufacture of raw materials, into another product by manual labour or machines.

Tertiary industries neither produce a raw material nor make a product.

Quaternary industries involve the use of high tech industries.

There are several factors which influence the location of industry.

LEDC’s have begun to play a dominant part in world markets due to good access to raw materials and the ability to charge less for products.