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How does the EPA indicate the air quality in a particular region? Explain this system.
Magnetic Field
A vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials.
Position
The placement or arrangement of a body or part of a body in a specific area or in relation to other parts.
Radiopaque
Substances that do not allow the passage of X-rays or other forms of radiation and appear white or light on radiographic images.
Position
The location of an object or person in relation to other things; in medicine, it can describe the posture of a patient or the orientation of body parts.
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