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What are the main sources of air pollution in cities?
Urban air pollution primarily comes from vehicle emissions, industrial activities, construction dust, and crop burning in nearby regions. Weather conditions like low wind and temperature inversions trap these pollutants close to the ground, worsening air quality during winter months.
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How does air pollution affect health and the environment?
High levels of air pollution can cause respiratory problems, heart disease, and worsen conditions like asthma. It also harms the environment by damaging crops, forests, and water bodies, and contributes to climate change through increased greenhouse gases.
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What measures are being taken worldwide to reduce smog?
Governments are implementing temporary bans on construction, promoting cleaner fuels, and using cloud seeding to disperse pollutants. Long-term solutions include stricter emission standards, promoting public transport, and transitioning to renewable energy sources.
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How can individuals reduce their exposure to air pollution?
People can stay indoors during high pollution days, use air purifiers, wear masks, and avoid strenuous outdoor activities when air quality is poor. Staying informed about air quality indexes helps in planning daily activities safely.
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Why does air pollution worsen during winter in cities like Delhi?
Winter weather often traps pollutants due to low wind speeds and temperature inversions. Additionally, increased crop burning and heating needs during colder months contribute to higher pollution levels, creating a smog crisis that lasts through the season.
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Are protests and government actions effective in tackling air pollution?
Public protests raise awareness and pressure authorities to act, but lasting change requires comprehensive policies, stricter enforcement, and community involvement. Measures like banning crop burning and improving public transport are crucial for long-term improvement.