Understanding Major Pollutants

What is the primary composition of traffic-related air pollution (TRAP)?

• Only carbon emissions

• A mix of various compounds

• Single pollutant

• Only nitrogen oxides

How is ozone formed in the upper atmosphere?

• By the combination of nitrogen and oxygen

• Through the splitting of O2 by sunlight

• By industrial emissions

• Through volcanic activity

Which of the following is a byproduct of combustion that contributes to noxious gases?

• Methane

• Water vapor

• Carbon monoxide

• Helium

What is a characteristic of particulate matter (PM) that makes it harmful?

• It is harmless in small quantities

• It can enter the lungs and bloodstream

• It is visible to the naked eye

• It is only found in rural areas

Which household items commonly release volatile organic compounds (VOCs)?

• Glass windows

• Paints and cleaning supplies

• Wooden floors

• Metal furniture