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Environment

Issues related to the circumstances or condition of the earth's natural surroundings.

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methane (CH4)

Environment; Environment statistics

Colourless, non-poisonous and flammable gaseous hydrocarbon created by anaerobic decomposition of organic compounds. Methane is a potent greenhouse gas.

pressure-state-response framework

Environment; Environment statistics

Framework proposed for environmental indicators and indicators of sustainable development. See also framework for indicators of sustainable development.

secondary radiation

Environment; Environment statistics

Radiation originating from the absorption of previous radiation in matter. It may be in the form either of electromagnetic waves or of moving particles.

dissolved solids

Environment; Environment statistics

Disintegrated organic and inorganic material contained in water. Excessive amounts make water unsuitable for drinking or for use in industrial processes.

protected area

Environment; Environment statistics

Legally established land or water area under either public or private ownership that is regulated and managed to achieve specific conservation objectives.

air pollution index (API)

Environment; Environment statistics

Quantitative measure that describes ambient air quality. The index is obtained by combining figures for various air pollutants into a single measurement.

biological waste

Environment; Environment statistics

Waste containing mostly natural organic materials (remains of plants, animal excrement, biological sludge from waste-water treatment plants and so forth).