Examlex
What is the unifying principle of the biological sciences?
Trade
The exchange of goods, services, or both between two or more parties, either within an economy or between economies.
Consumption Possibilities
The range of goods and services that can be consumed given a consumer's income and prevailing prices.
International Trade
The exchange of goods and services across international boundaries or territories, involving the import and export of products.
Opportunity Cost
The worth of the best alternative that is given up in order to make a choice.
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