Theory question 208
Environmental Hazards and Conservation(a) Name any four natural hazards. (b) Highlight any three effects of air pollution on man. (c) In what three ways can air pollution be controlled?
Show the model answer
(a) Flood, drought, earthquake, volcanic eruption, hurricane/tornado, landslide, tsunami, thunderstorm/lightning, desert encroachment.
(b) Respiratory diseases (asthma, bronchitis, lung cancer); eye and skin irritation; ozone layer depletion leading to skin cancer; acid rain damaging crops, buildings and water; global warming; poor visibility causing road and air accidents; discomfort and bad smell.
(c) Laws against harmful emissions; treat factory fumes (filters, scrubbers); use clean energy (solar, wind); stop gas flaring and bush burning; maintain vehicles and ban smoky ones; locate industries away from homes; afforestation; recycling instead of burning waste.
Keep (a) to natural hazards only.