Examlex
When retreating glaciers carved deep coastal valleys they created:
Marginal Revenue
Extra income gained by disposing of one additional unit of a good or service.
Marginal Cost
The expense associated with manufacturing an extra single unit of a product or service.
Quantity Sold
This refers to the total amount of a product or service that is sold within a given time period.
Perfect Competitor
An idealized market structure in which many firms sell identical products, there is free entry and exit, and all buyers and sellers are fully informed, leading to efficient outcomes.
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