Before External Respiration Occurs,the Concentration or Partial Pressure of Oxygen

question 21

Multiple Choice

Before external respiration occurs,the concentration or partial pressure of oxygen in the alveoli is _____ than in the pulmonary capillaries.

• A)higher
• B)lower
• C)no different

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Definitions:

Explicit Cost

Direct payment made to others in the process of running a business, such as wages, rent, and materials.

Future Earnings

The projected income a person or entity will receive from work or investments in the future.

Migration

The movement of people from one place to another, often across political boundaries, for the purpose of settling temporarily or permanently.

Wage Rate

The amount of money paid to an employee for a specific amount of work, typically expressed per hour or year.