(i) Primary Activities vs. Tertiary Activities:
– Primary Activities: Involve extracting or harvesting natural resources directly from nature. Examples include agriculture, fishing, mining, and forestry.
– Tertiary Activities: Refer to services involving the distribution, exchange, and consumption of goods. Examples encompass trade, transport, banking, education, healthcare, and tourism.

(ii) Subsistence Farming vs. Intensive Farming:
– Subsistence Farming: Primarily for self-consumption, it involves cultivating small areas with limited resources and traditional techniques to fulfill family needs.
– Intensive Farming: Aims for maximum yield on a limited area using high inputs like fertilizers, machinery, and technology, ensuring higher productivity for commercial purposes.