Air Pollution

Front

What are volatile organic compounds (VOCs)?

Back

VOCs are organic chemicals that have a high vapor pressure at room temperature, which means they can easily evaporate into the air. Examples include gasoline, paints, and solvents.

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What is smog?

Back

Smog is a type of air pollution that is a mixture of smoke and fog, often caused by the release of pollutants like VOCs and particulate matter into the atmosphere.

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What is lead poisoning and how is it related to air pollution?

Back

Lead poisoning is a medical condition caused by the accumulation of lead in the body, which can occur from exposure to lead in exhaust from old gasoline and other sources.

Front

What is particulate matter (PM)?

Back

Particulate matter refers to tiny solid or liquid particles suspended in the air, such as dust, ash, and smoke, which can harm human health when inhaled.

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How do air currents affect air pollution?

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Air currents can transport pollutants from one region to another, meaning that air pollution in one country can affect air quality in distant areas.

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What are the health effects of air pollution?

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Air pollution can lead to various health issues, including respiratory diseases, cardiovascular problems, and increased risk of cancer.

Front

What is acid rain?

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Acid rain is precipitation that is significantly more acidic than normal, often caused by sulfur dioxide and nitrogen oxides released into the atmosphere from industrial processes.

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What are the main sources of air pollution?

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Main sources include vehicle emissions, industrial discharges, burning of fossil fuels, and natural sources like wildfires.

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What role do trees play in air quality?

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Trees help improve air quality by absorbing carbon dioxide and releasing oxygen, as well as trapping dust and pollutants on their leaves.

Front

What is the difference between primary and secondary pollutants?

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Primary pollutants are directly emitted into the atmosphere (e.g., carbon monoxide), while secondary pollutants form in the atmosphere through chemical reactions (e.g., ozone).