This lecture focus to presentation on Sectors of Industry. Industry is the sector of the economy related to the production of products and services. Industry has four sectors, they are Primary, secondary, Tertiary and Quaternary. The primary sector of industry is usually called extraction. It generally involves changing natural methods into primary products. Most products from this sector are considered raw materials for other industries. The tertiary sector of industry is generally known as the service sector.
Presentation on Sectors of Industry
