In Terms of Other Substances in the Earth System, Air

question 20

Multiple Choice

In terms of other substances in the Earth system, air is considered ________ conductor of energy.

• A) an excellent
• B) a better than average
• C) an average
• D) a poorer than average
• E) a very poor

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Definitions:

Anterior Interventricular Artery

A blood vessel that delivers oxygenated blood to the front of the septum and both ventricles of the heart.

Electrical Excitation

The process by which an electrical impulse stimulates a nerve cell, muscle, or other excitable tissue to produce an action potential.

AV Bundle

The bundle of His, a collection of heart muscle cells specialized for electrical conduction, transmitting impulses from the atrioventricular node to the ventricles of the heart.

SA Node

The sinoatrial node, a group of cells in the right atrium of the heart that acts as the natural pacemaker by generating electrical impulses.