Most of the Ultraviolet Radiation Reaching the Upper Atmosphere Is

question 30

Multiple Choice

Most of the ultraviolet radiation reaching the upper atmosphere is absorbed by

• A)CFCs.
• B)ozone.
• C)nitrogen.
• D)carbon dioxide.
• E)water vapor.

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Definitions:

Systematic Desensitization

A behavioral therapy technique used to reduce phobic reactions through gradual exposure to the feared object or situation.

Spontaneous Recovery

The reappearance of a previously extinguished conditioned response after a period of time without exposure to the conditioned stimulus.

Mental Representation

An internal image or concept of an external reality or abstract idea.

Extinct Conditioned Responses

The process by which a conditioned response becomes weaker or disappears after the conditioned stimulus is repeatedly presented without the unconditioned stimulus.