Why Have Efforts to Reduce Sulfur Oxide Emissions Met with Greater

question 48

Multiple Choice

Why have efforts to reduce sulfur oxide emissions met with greater success than those directed at nitrogen oxide emissions reductions?

• A)Sulfur oxides have higher molar masses than nitrogen oxides.
• B)Sulfur oxide emissions come from a limited number of point sources.
• C)Nitrogen oxides are only produced at power plants.
• D)Nitrogen reacts more readily with oxygen than sulfur.

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Definitions:

Principle of Spontaneous Recovery

The reappearance of a previously extinguished response after a period of no exposure to the conditioned stimulus, often observed in classical conditioning.

Fear of Rat

An irrational and intense fear of rats, technically known as musophobia.

Conditioning

A process of behavior modification by which a subject comes to associate a desired behavior with a previously unrelated stimulus.

Metronome

A device used to mark time at a selected rate by giving a regular tick sound.