Answer
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Work Step by Step
$\textbf{Primary Sector:}$ This sector includes activities directly related to natural resources extraction or cultivation. Examples of primary sector activities include agriculture, forestry, fishing, mining, and oil extraction. It is the foundation of economic activity, as it provides raw materials for other sectors.
$\textbf{Secondary Sector:}$ The secondary sector involves activities that transform raw materials from the primary sector into finished goods. This sector encompasses manufacturing industries, such as food processing, textile production, automobile manufacturing, and construction. It adds value to raw materials and generates goods for consumption or further processing.
$\textbf{Tertiary Sector:}$ The tertiary sector consists of services provided to individuals or businesses. It includes a wide range of activities, such as retail, banking, healthcare, education, transportation, and hospitality. The tertiary sector is crucial for supporting the functioning of the economy and meeting the needs of the population.
Sectoral evolution refers to the shifting contribution of these sectors to an economy's GDP over time. As economies develop and advance, there is often a transition from a predominantly agrarian-based economy (with a dominant primary sector) to one where manufacturing and services play a more significant role (with a dominant secondary and tertiary sector). This evolution is influenced by technological advancements, changes in consumer demand, and shifts in comparative advantages.