The three types of economic activities are primary, secondary, and tertiary.

Primary Activities: Activities which involve direct extraction and production of natural resources are called primary activities.

Examples: agriculture, fishing, mining.

Secondary Activities: Activities which are concerned with the processing of natural resources are called secondary activities.

Examples: manufacturing of finished products.

Tertiary Activities: Activities which fall neither in the primary category nor the second category are called tertiary activities. They form support to primary and secondary activities.

Examples: selling goods, advertising, and banking.