Environment Database
The environment database and a glossary about facts, terms and descriptions

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Glossary R

The Environmental Glossary. Letter R +++ Popular Articles: 'Research indicator', 'Response indicator', 'Range'

Ratio

Español: Razón / Português: Razão / Italiano: Rapporto
A Ratio is the relationship in quantity, amount, or size between two or more things.

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Ration

A Ration is Feed fed to an animal during a 24-hour period.

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Rattus norvegicus

Deutsch: Wanderratte / Español: Rata noruega / Português: Rato-norueguês / Français: Rat surmulot / Italiano: Ratto norvegese

Rattus norvegicus, commonly known as the Norway rat, brown rat, or sewer rat, is a species of rodent often associated with urban environments but it has significant impacts on various ecosystems around the world. This species is renowned for its adaptability to different habitats and its ability to survive in close quarters with humans.

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Rattus rattus

Deutsch: Hausratte / Español: Rata negra / Português: Rato-preto / Français: Rat noir / Italiano: Ratto nero

Rattus rattus, commonly known as the black rat, is a species of rodent that has significant implications in the environmental context, particularly in terms of its impact on ecosystems and its role as an invasive species. This species is notorious for its adaptability, reproductive capability, and its role in spreading diseases, which makes it a concern in both natural and human-altered environments.

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Raw Data

The Raw Data are all the documentation generated during sampling and analysis which includes, but is not limited to, field notes, hardcopies of electronic data, disks, untabulated sample results, QC sample results, printouts of chromatograms, instrument outputs, and handwritten notes.

Raw Water

A Raw Water is Water in its natural state, prior to any treatment for drinking. See finished water.

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RCRA

RCRA is the Resource conservation, and Recovery Act (RCRA)

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Re-entrainment

A Re-entrainment is Situation that occurs when the air being exhausted from a building is immediately brought back into the system through the air intake and other openings in the building envelope.

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Re-entry

A Re-entry is Situation that occurs when the air being exhausted from a building is immediately brought back into the system through the air intake and other openings in the building

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Re-refine

A Re-refine is To clean used oil so that it can be used again. This process saves Energy and money and prevents possible Pollution from oil that is improperly handled.

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