Write different types of industries with examples?

Industry can be classified into 5 different sectors:

primary:also called the extraction. It generally involve changing Natural Resources into primary products. Most products in this sector are considered raw materials for other industries.

Secondary: also known as the manufacturing industry. It produces finished, usable products.

Tertiary: also known as the service sector or service industry. It involves the provision of services to businesses as well as final consumers.

Quaternary: this is the research sector. Industrial research looks for new ways to cut costs, find new markets, produce new ideas, new production methods and methods of manufacture.