Extractive industries, also known as primary industries, are industries that are involved in the extraction and production of raw materials, such as oil, gas, minerals, and other natural resources. These industries are called "primary" because they are involved in the first step of the production process and provide the raw materials that are used to create other products. The products produced by extractive industries are often called "commodities" because they are typically sold on global markets and their prices are determined by supply and demand.
In contrast, indirect industries are involved in the production of goods and services that are not directly related to the extraction of raw materials. For example, the manufacturing of consumer goods, such as cars or electronics, is an indirect industry because it relies on raw materials that have been extracted and processed by primary industries. Service industries, such as finance, education, or healthcare, are also considered indirect industries because they provide services rather than physical products.