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What Are the Four Major Types of Coal,and Which Is

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What are the four major types of coal,and which is the most valuable?


Definitions:

Transport of Respiratory Gases

The process by which oxygen is carried to body cells and carbon dioxide is carried away from them, primarily involving hemoglobin in the blood.

Residual Volume

The amount of air remaining in the lungs after a forceful exhalation, ensuring continuous gas exchange.

Inspiratory Reserve Volume

The additional amount of air that can be inhaled after a normal inhalation, used to assess lung function.

Tidal Volume

The amount of air that is inhaled or exhaled during normal breathing.

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