The document discusses various sources and effects of air pollutants such as smoke particles, dust, carbon monoxide, sulphur dioxide, oxides of nitrogen, lead, chlorofluorocarbons, and carbon dioxide. Smoke particles come from sources like cigarette smoke, vehicle exhaust, and burning of rubbish or fossil fuels, and can cause breathing difficulties and eye irritation. Dust from construction sites and cement plants can lead to lung cancer and asthma. The document also lists steps that can be taken to control air pollution, such as using catalytic converters in cars, enforcing anti-pollution laws, and stopping open burning of rubbish.

1. The sources & effects of
air pollutants

2. Air pollutant Source Effect
Smoke particles &
soot
•Cigarette smoke
•Smoke from motor
vehicles
•Burning of rubbish
•Burning of fossil fuels
•Forest fires
•Cause breathing difficulties
•Make the eyes feel
uncomfortable
•Cause haze
Dust •Construction sites
•Cement plants
•Cause lung cancer, coughing &
asthma
Carbon monoxide •Cigarette smoke
•Smoke from motor
vehicles
•Cause tiredness, headache,
brain damage and death
Sulphur dioxide •Burning of coal •Damages lung cells
•Forms acid rain
•Kills plants

3. Air pollutant Source Effect
Oxides of nitrogen •Smoke from motor
vehicles
•Form acid rain
Lead •Burning of leaded petrol •Damages the kidneys, heart & brain
•Cause mental retardation in children
Chlorofluorocarbon
(CFC)
•Aerosol sprays
•Electronics factories
•Damages the ozone layer and exposes
us to harmful rays from the sun
Carbon dioxide •Burning of rubbish
•Burning of fossil fuels
•Cause the rising of the Earth’s
temperature as a result of the
greenhouse effect

4. Steps to control air
pollution

5. STEP
Cars- catalytic
converters
Stop open
burning of
rubbish
Filter smoke
from
factories
Anti-pollution
laws
Vehicles- use
unleaded petrol
Factories- use
less CFC
Factories far away
from housing area
The habit of
smoking must
be stopped