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During inspiration,the diaphragm contracts and moves up into the thoracic cavity.
Diminishing Marginal Returns
The principle that as additional units of a factor of production are added, the increase in output will eventually decrease, holding other factors constant.
Constant Returns to Scale
A situation where increasing all inputs by a certain factor results in output increasing by the same factor, indicating proportionate scalability of production.
Increasing Returns to Scale
Occurs when an increase in all inputs by a certain percentage causes a more than proportional increase in output.
Decreasing Returns to Scale
Decreasing returns to scale occur when an increase in all inputs leads to a less than proportional increase in output, showing that the firm becomes less efficient as it scales up production.
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