Examlex
Gases are transported during external respiration by active transport mechanisms.
Marginal Cost
The investment needed to make an extra unit of a good or service.
Average Cost
A measure of the total cost of production divided by the number of units produced, used to calculate the cost per unit.
Industry Demand
The total demand for the products or services provided by a specific industry, represented as the sum of individual demands within a market.
Perfect Competition
A market structure characterized by many buyers and sellers, homogeneous products, and no barriers to entry or exit, leading to efficient pricing and output decisions.
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