The answer is on and below.
In economics, the maximum output of two items with a certain quantity of input is measured by a production possibilities curve. The four variables of production—natural resources (including land), labor, capital goods, and entrepreneurship—combine to make up the input.
The PPF illustrates that a rise in one commodity's production can only occur when the output of the other commodity falls. Managers may use the PPF as a tool for making decisions when determining the best product mix for their organization.
Therefore, the first blank will be filled by on and second by below.
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