You are trying to explain debit and credit memos that appear on bank statements and whether these will increase or decrease your company's bank account balance.Complete the following table to help your new staff understand. 
Definitions:
Gain From Trade
The increase in utility or benefit that entities receive from trading goods or services with each other, often as a result of specialization and efficiency.
Barrels
A unit of measure for oil and other petroleum products, equal to 42 US gallons.
Absolute Advantage
The ability of an individual, company, or country to produce a good or service at a lower cost per unit than the cost at which any other entity produces that good or service.
Production Possibility Frontiers
A curve depicting all maximum output possibilities for two or more goods, given a set of inputs.
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