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In big cities like Ho Chi Minh and Hanoi, there are a lot of factories and vehicles. So, the air here is polluted.
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Haha
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Air pollution happens when there are a lot of harmful gases and smoke in the atmosphere.
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The first cause of air pollution is harmful gases and smoke from vehicles such as cars, motorbikes, trucks, buses and airplanes. The second cause of air polluti
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Air pollution causes many health problems such as dizzness, headache, skin irritation and blackouts.
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Air pollution also causes acid rain, which destroy buildings and forests.
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The first solution to air pollution is that we should use more bicycles to reduce carbon dioxide.
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The second solution to air pollution is that we should use more green energy such as wind energy, solar energy, and hydro energy.
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The third solution to air pollution is that we plant more trees for more oxygen.
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If we live in big cities, we should eat fruits and drink juice regularly to clean the lungs.
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We should also exercise every day to stay healthy.
What are the main factors to air pollution in big cities?
Harmful gas and smoke
