Once Released, How Long Do Chlorofluorocarbons Remain in the Atmosphere

question 15

Multiple Choice

Once released, how long do chlorofluorocarbons remain in the atmosphere?

• A)about 1 month
• B)about 100 years
• C)about 10 days
• D)about 1 year

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Definitions:

Delta Waves

Low-frequency brain waves that are present during deep sleep and are associated with healing and regeneration in the human body.

Circadian Rhythm

The natural, internal process that regulates the sleep-wake cycle and repeats roughly every 24 hours.

Stage III

A classification in disease staging, often indicating advanced or moderately advanced disease, with specifics varying by the condition being described.

Sleep Cycle

The progression through various stages of non-REM and REM sleep that occurs multiple times during a typical night's sleep, important for physical and mental restoration.