Understanding Air Pollution and Its Effects

Which of the following is a primary source of sulfur dioxide (SO₂) in the atmosphere?

• Automobile exhaust

• Industrial processes

• Forest fires

• Household cleaning products

Explain how particulate matter (PM) affects human respiratory health.

• It causes immediate lung cancer.

• It can lead to respiratory diseases such as asthma and bronchitis.

• It strengthens the immune system.

• It has no effect on human health.

Which of the following is a key component of the Clean Air Act in the United States?

• Establishing air quality standards for pollutants

• Promoting the use of coal as a primary energy source

• Reducing the number of national parks

• Encouraging deforestation

Describe how catalytic converters help in reducing air pollution from vehicles.

• They increase the fuel efficiency of the vehicle.

• They convert harmful gases into less harmful emissions.

• They trap particulate matter in a filter.

• They reduce the noise produced by the engine.

What is the primary greenhouse gas responsible for global warming?

• Nitrogen

• Oxygen

• Carbon dioxide

• Helium

Which of the following is a common indoor air pollutant?

• Ozone

• Radon

• Sulfur dioxide

• Methane

Evaluate the effectiveness of using air purifiers to improve indoor air quality.

• Air purifiers are ineffective in removing any pollutants.

• Air purifiers can remove some pollutants but are not effective against gases like radon.

• Air purifiers eliminate all types of indoor pollutants.

• Air purifiers increase the concentration of pollutants.

Identify a technology used to control industrial emissions of nitrogen oxides (NOx).

• Electrostatic precipitators

• Flue-gas desulfurization

• Selective catalytic reduction

• Baghouse filters

Discuss the role of government regulations in managing air quality.

• Regulations have no impact on air quality.

• Regulations help in setting limits on emissions and enforcing compliance.

• Regulations only apply to water pollution.

• Regulations encourage the increase of industrial emissions.

Most human-made air pollution comes from

• Burning fossil fuels
• Solar energy
• Industrial waste
• Deforestation