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Air Quality
Air Quality
Air Quality
Air Quality
Commons
Commons

Terminology

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V...

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Term Definition
Vegetation

Plant life

planetpals

Veto

A Presidential action rejecting a bill as passed by the U.S. Congress. The President can also effect a ""pocket veto"" by holding an unsigned bill past the signing period.

NRDC

Virga

Rain which fall in the sky but evaporates before it reaches the ground

planetpals

Virgin Forest

A forest never logged.

NRDC

VOCs

see Volatile Organic Compounds

Voice Vote

A vote where members vote by saying either ""yes"" or ""no"" together; individual member's votes are not placed on record.

NRDC

Volatile organic compounds (VOCs)

Organic chemical compounds that have high enough vapor pressures under normal conditions to significantly vaporize and enter the atmosphere. A wide range of carbon-based molecules, such as aldehydes, ketones, and other light hydrocarbons are VOCs. The term often is used in a legal or regulatory context and in such cases the precise definition is a matter of law. These definitions can be contradictory and may contain "loopholes"; e.g. exceptions, exemptions, and exclusions. The United States Environmental Protection Agency defines a VOC as any organic compound that participates in a photoreaction; others believe this definition is very broad and vague as organics that are not volatile in the sense that they vaporize under normal conditions can be considered volatile by this EPA definition. The term may refer both to well characterized organic compounds and to mixtures of variable composition.

Wikipedia