Primary economic activities are those that directly extract resources from the Earth, such as agriculture, mining, and forestry. Services are not a primary economic activity because they do not directly extract resources from the Earth.

Renewable resources are those that can be replenished naturally, such as solar energy, wind energy, and hydropower. Fossil fuels are not renewable because they are formed from the remains of ancient plants and animals that have been buried and subjected to heat and pressure over millions of years.

Secondary economic activities are those that process or transform raw materials into finished goods, such as manufacturing, construction, and transportation. Retail trade is not a secondary economic activity because it does not process or transform raw materials into finished goods.

Tertiary economic activities are those that provide services to other businesses or consumers, such as education, healthcare, finance, and tourism. Agriculture is not a tertiary economic activity because it is a primary economic activity.

Factors of production are the resources that are used to produce goods and services. Land, labor, and capital are all factors of production. Entrepreneurship is not a factor of production because it is not a resource that is used to produce goods and services.

Economic systems are the ways in which societies organize the production, distribution, and consumption of goods and services. Capitalism, socialism, and communism are all types of economic systems. Mixed economy is not a type of economic system because it is a combination of capitalism and socialism.

Economic growth is the increase in the value of goods and services produced by an economy over time. Extensive economic growth is growth that is achieved by increasing the quantity of inputs, such as labor and capital. Intensive economic growth is growth that is achieved by increasing the efficiency of inputs, such as by using new technology. Sustainable economic growth is growth that can be maintained without damaging the environment. Uneconomic growth is not a type of economic growth because it is growth that is not sustainable.

Economic development is the process of improving the economic well-being of a country or region. Economic growth is one aspect of economic development, but it is not the only aspect. Human development, environmental sustainability, and social justice are also important aspects of economic development.

Trade barriers are government policies that restrict the import or export of goods and services. Tariffs, quotas, and embargoes are all types of trade barriers. Subsidies are not trade barriers because they are government payments that are given to businesses to help them produce or sell goods and services.

Economic integration is the process of reducing or eliminating trade barriers between countries. A free trade area is an area in which goods and services can be traded freely between member countries. A customs union is an area in which goods and services can be traded freely between member countries, and there is a common external tariff on goods imported from non-member countries. A common market is an area in which goods, services, labor, and capital can move freely between member countries. An economic union is an area in which goods, services, labor, and capital can move freely between member countries, and there is a common currency.