Theory question 308
Environmental Hazards and Conservation(a) Define atmospheric pollution. (b) List four major sources of air pollutants. (c) Highlight four effects of atmospheric pollution.
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(a) Atmospheric pollution is the release into the air of harmful substances (gases, smoke, dust, chemicals) in amounts that damage people, animals, plants or property.
(b) Industrial smoke and fumes; vehicle exhaust; gas flaring; burning of refuse and bush burning; generators; volcanic eruptions; dust from mining and quarrying; aerosols and refrigerants (CFCs).
(c) Respiratory diseases (asthma, bronchitis); acid rain damaging buildings, forests and lakes; depletion of the ozone layer; global warming and climate change; smog and reduced visibility; damage to crops and vegetation; unpleasant smells.
Four effects, each in a phrase or sentence.