Particulate Matter and Its Effects

What does particulate matter (PM) consist of?

• Solid particles and liquid droplets

• Only solid particles

• Only liquid droplets

• Gases and vapors

Which of the following is a component of PM that affects visibility in urban environments?

• Water vapor

• Iron

• Oxygen

• Nitrogen

How does particulate matter (PM) affect human health?

• Improves digestion

• Enhances vision

• Influences the human respiration system

• Strengthens bones

What is a major characteristic of carbon monoxide (CO) as an air pollutant?

• It is a colorful, fragrant gas.

• It is a colorless, odorless, poisonous gas.

• It is a visible, non-toxic gas.

• It is a sweet-smelling, harmless gas.

What tragic event involving carbon monoxide is mentioned in the document?

• A factory explosion.

• A forest fire.

• The death of 3 U.S. Marines in a car.

• A chemical spill in a river.

Based on the pie chart, which air pollutant has the highest percentage of emissions in the United States as of 2013?

• Sulfur oxides

• Carbon monoxide

• Particulate matter (PM10)

• Ammonia

What percentage of emissions is attributed to volatile organic compounds according to the chart?

• 10%

• 13%

• 15%

• 4%

Which of the following pollutants has the lowest percentage of emissions in the chart?

• Ammonia

• Nitrogen oxides

• Sulfur oxides

• Particulate matter (PM10)

What is a major characteristic of carbon monoxide (CO) as an air pollutant?

• It is a colorful, fragrant, non-toxic gas.

• It is a colorless, odorless, poisonous gas.

• It is a visible, sweet-smelling, harmless gas.

• It is a colorless, pungent, non-toxic gas.

How is carbon monoxide (CO) primarily formed?

• Through the complete combustion of carbon-containing fuels.

• Through the incomplete combustion of carbon-containing fuels.

• Through the evaporation of water.

• Through the photosynthesis process.