Members:Chan Yee Na (26) Koo Kit Yan (28)Lai Ka Ka (29)Sin Chun In (37)Wong Chun Yan (39)

• Causes of Air Pollution

• Effect of Air Pollution

• Solutions and Suggestions of HKSAR Government

• Conclusions

TransportsTransports

• Since more cars are used in city area, more exhaust fumes discharge relatively.

• Also, the buildings in town are tall and this blocks the spread of polluted air, this worsen the problem of air pollution in certain areas.

Burning and Industrial Activities

• During the process of burning the fossil fuel, many pollutants would be discharged, e.g. carbon dioxide and carbon monoxide.

• Poisonous gases would be discharged by factories and this may cause many diseases, e.g. lung cancer.

Domestic Activities

• CFCs are organic compounds and were used in making foam items such as foam cups and foam lunch boxes, and in aerosols such as insecticides and hair sprays.

• Also, the use of CFCs would destroy the ozone layer, so they were banned in 1987.

Waste Incineration

• Since more and more rubbish have been thrown by residents, we could predict the landfills would become saturated.

• Moreover, we need to incinerate more and more waste, and the exhaust fumes would be discharged.

Effect of Air Pollution

• Air quality becomes worse - The air contains a lot of polluting gases including carbon dioxide, carbon monoxide, sulphur dioxide, nitrogen dioxide, particulates and lead particles

• The sea level rises up- Due to ice melting in polar regions

Effect of Air Pollution

• Rises in temperature- Greenhouse effect & global warming

• Irritation to human- Carbon monoxide may causes dizziness, headaches, fainting and eventually death - Sulphur dioxide and nitrogen dioxide cause irritation to our respiration system and eyes

Effect of Air Pollution

• Lower the photosynthesis rate of plants- Polluting gases, smoke and fog block the sunlight

• Affect of air transportation- Smoke and fog lower the range of vision

• Acid rain

-Use public transport instead of private car.

This can reduce the concentration of pollutants such as carbon dioxide, carbon monoxide, etc from exhaust fumes.

MTR, a kind of public transport

-Avoid smoking and using spraySpray contains CFCS, which can pollute the air. So if we don't use spray, air pollution problem will be less serious.Smoking not only bad for our health, but also cause air pollution!

Sprays

- Switch off electrical appliances when we don't use them

For example, when we switch on the lights, electricity is needed. Generating electricity is by the method of burning coal.

If we don't save electricity, air pollution may also get more serious because burning coal can release large amount of carbon dioxide.

- EducationThe Government and community groups play an important role in spreading messages of environmental protection through education.

e.g. Education through tree-planting which helps to absorb carbon dioxide and release oxygen.

- LegislationLaws are made to prevent people from pollutingthe air.

- Planting trees beside the roadThis can make the air clean.

-Introducing LPG taxi and light bus schemeThis can reduce the gases (carbon dioxide) that pollute the air.

Conclusions

• Causes of Air Pollution in Hong Kong– Transports– Burning and Industrial Activities

– Domestic Activities

– Waste Incineration

Conclusions

• Effect of Air Pollution– Air quality becomes worse – The sea level rises up– Rises in temperature– Irritation to human– Lower the photosynthesis rate of plants– Affect of air transportation– Acid rain

Conclusions

• Solutions and suggestions– Use public transport in

stead of private car– Avoid smoking and usi

ng spray– Switch off electrical a

ppliances when we don’t use them

Conclusions

• Education

• Legislations

• Plant more trees

• Introduce the use of clean fuels