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Environment

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

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bacteria

Environment; Environment statistics

Single-celled micro-organisms. Some are useful in pollution control because they break down the organic matter in water and land. Other bacteria may cause disease.

air pollution episode

Environment; Environment statistics

The high concentration of air pollutants due to temperature inversion and low winds. It may give rise to serious, and sometimes fatal, illness. See also inversion.

intensive agriculture

Environment; Environment statistics

Agricultural practices that produce high output per unit area, usually by intensive use of manure, agrochemicals, mechanization and so on. See also green revolution.

sinking

Environment; Environment statistics

Controlling of oil spills through use of an agent to trap the oil and sink it to the bottom of the body of water in which the agent and the oil are to be biodegraded.

cap

Environment; Environment statistics

Layer of clay or some other highly impermeable material installed over the top of a closed landfill to prevent entry of rainwater and minimize production of leachate.

ionosphere

Environment; Environment statistics

Layer of the upper atmosphere extending upwards from about 80 kilometres above the earth's surface in which atoms tend to be ionized by incoming solar radiation.

landfill

Environment; Environment statistics

Final placement of waste in or on the land in a controlled or uncontrolled way according to different sanitary, environmental protection and other safety requirements.