Theory question 207
Environmental Hazards and Conservation(a) Name two main types of environmental pollution and describe three causes of any one of them
(b) State three effects of pollution on man
Show the model answer
Model answer
(a) Air pollution and water pollution (also land, noise)
Air pollution causes: gas flaring and industrial smoke; vehicle exhaust; burning of refuse and bush; dust from quarries and harmattan
(Water: sewage and refuse; industrial effluent and chemicals; oil spillage; fertiliser/pesticide run-off)
(b) Diseases – respiratory (asthma, bronchitis), cholera, typhoid, cancers; reduced visibility causing accidents; death of fish and crops so less food and income; acid rain damaging buildings; unpleasant smell and noise causing stress
Explanation
Keep the three causes to the type you chose.