What is the main feature of this type of junction? 
Definitions:
Marginal Revenue
The additional income that an organization receives from selling one more unit of a good or service.
Profit Maximizing
The process or strategy by which a firm adjusts its production to achieve the highest possible profit.
Price Elasticity
An assessment of the degree to which the demand for a commodity adjusts when its price changes.
Output Level
The quantity of goods or services produced by a firm or economy over a certain period.
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