Primary industries involve the direct use of natural resources, such as agriculture, fishing, forestry, and mining. These industries provide raw materials for other sectors. Secondary industries focus on processing and manufacturing, converting raw materials into finished or semi-finished goods, such as textiles, steel, and automobiles. Tertiary industries provide services rather than goods, including transport, trade, banking, education, and healthcare. Together, these three types of industries form an interconnected system that supports economic growth and improves the quality of life in a region.