Which Two Substances Are Generally Required for Photochemical Smog to Occur

question 119

Multiple Choice

Which two substances are generally required for photochemical smog to occur? 

• A) the presence of phosphorous and nitrates 
• B) the presence of sunlight and phosphorous 
• C) the presence of sunlight and volatile organic compounds 
• D) the presence of phosphorous and nitrogen fixing bacteria

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Definitions:

Reliability

The consistency of a test, measurement, or system’s performance over time.

Capability

The ability of an entity, whether an organization, system, or individual, to achieve its objectives or perform a specific task effectively.

Measured Parameters

Specific criteria or variables that are quantified or assessed to evaluate performance, conditions, or changes within a particular context.

Cost-Per-Unit

The amount of money it takes to produce one unit of a product or deliver a service.