Glossary A

The Environmental Glossary. Letter A +++ Popular Articles: 'Absorption', 'Abatement Debris', 'Acclimatization'

Autotroph see producer

An auxiliary data is Data derived from a source other than EMAP, that is, from an experiment or from another monitoring or sampling program, either Federal or State.

An Auxiliary Power Unit (APU) provides a larger Array of comfort features for drivers looking to reduce idling.

An Availability Session is Informal meeting at a public location where interested citizens can talk with EPA and state officials on a one-to-one basis.

The available Chlorine is a measure of the amount of chlorine

Deutsch: Mittelwert / Español: Media / Português: Mêdia / Français: Moyenne / Italiano: Media

In colloquial language average usually refers to the sum of a list of numbers divided by the size of the list, in other words the arithmetic mean. However, the word "average" can confusingly be used to refer to the median, the mode, or some other central or typical value.

An Average Daily Gain is Pounds of liveweight gained per day.

Deutsch: Durchschnittstemperatur / Español: Temperatura media / Português: Temperatura média / Français: Température moyenne / Italiano: Temperatura media

Average temperature refers to the mean temperature of a specific location over a defined period, such as a day, month, season, or year. In the environmental context, average temperature is a crucial indicator of climate patterns and trends, influencing ecosystems, weather conditions, and human activities. It is calculated by averaging the daily high and low temperatures recorded over the given period.

Deutsch: Aves / Español: Aves / Português: Aves / Français: Oiseaux / Italiano: Uccelli

Aves, commonly known as birds, are a diverse group of endothermic vertebrates characterized by feathers, beaks, and a high metabolic rate. In the context of the environment, Aves play critical roles in ecosystems, acting as pollinators, seed dispersers, predators, and prey. They are essential indicators of environmental health and are integral to biodiversity and ecological balance.

An Aviation gasoline is all special grades of gasoline for use in aviation reciprocating engines, as given in the American Society for Testing and Materials (ASTM) specification D 910