What Percentage of Smokers Started Before They Were 18

question 63

Multiple Choice

What percentage of smokers started before they were 18?

• A) 50
• B) 85
• C) 15
• D) 30

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Definitions:

Oval Window

A membrane-covered opening that leads from the middle ear to the cochlea of the inner ear, vital for the process of hearing.

Sound Waves

Vibrations that travel through air or another medium and can be heard when they reach a person's or animal's ear, fundamental to the perception of sound.

Frequency

The number of occurrences of a repeating event per unit of time, often measured in cycles per second or Hertz.

Cochlea

A spiral-shaped, fluid-filled inner ear structure responsible for converting sound waves into nerve impulses that are interpreted by the brain as sound.