9 Terms
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Environment statistics
The development of methodologies and data collection in support of the development and harmonization of national and international statistics on the environment.
Industry: Environment
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Environment statistics
Decibel (dB)
Environment; Environment statistics
Unit of sound measurement on a logarithmic scale, with sound approximately doubling in loudness for every increase of 10 decibels.
Perennial
Environment; Environment statistics
Plant that lives from year to year, becoming dormant after one growing season and sending up new shoots for the next growing season.
Environmental debt
Environment; Environment statistics
Accumulation of past environmental impacts of natural resource depletion and environmental degradation, owed to future generations.
Water quality classes
Environment; Environment statistics
Categories of water quality that encompass the overall state of the pollution or cleanliness of water. See also saprobic water classification.
Geographical information system (GIS)
Environment; Environment statistics
Information system that can input, process, analyse and visualise geographically referenced data in order to support decision-making processes.
Waste-water treatment
Environment; Environment statistics
Process to render waste water fit to meet environmental standards or other quality norms. Three broad types of treatment may be distinguished.
Semi-arid zones
Environment; Environment statistics
Areas where mean annual rainfall is between about 250 and 600 millimetres (mm), rainfall seasonal and variable, and potential evaporation high.
