Specific Pollutants
Sources of Emissions
Prevention Strategies
Natural vs. Anthropogenic
Environmental and Health Impacts
100

This pollutant was commonly emitted by automobiles until it was banned from being added to gasoline

Lead (Pb)

100

This activity which is common in rural areas is a source of particulate matter pollution

Agriculture

100

The United States relies primarily on this fossil fuel to generate electricity because it burns very cleanly

Natural Gas

100

This natural biologic process removes carbon compounds from the atmosphere

Photosynthesis

100

This type of pollution is known for interfering with animal communication

Noise Pollution

200

This pollutant is beneficial when it's in the stratosphere but harmful when it's in the troposphere

Ozone (O3)

200

When nitrogen oxides and this other air pollutant are present in the atmosphere, ozone can form

VOCs (volatile organic compounds)

200

This device filters out pollutants from your car engine's exhaust by using catalysts.

Catalytic converter

200

This natural source of pollution is common in grassland and shrubland biomes

Wildfire

200

To determine the effects of acid deposition on soil fertility, you would measure this abiotic factor

pH (acidity)
300

This pollutant is created during incomplete combustion and causes asphyxiation when high concentrations are inhaled

Carbon Monoxide (CO)

300

The largest source of atmospheric arsenic, mercury, and radioactive isotopes.

Coal-fired powerplants

300

Making sure cracks in your house's foundation are sealed is a good way to prevent exposure to this type of air pollutant.

Radon gas

300

This is the largest natural source of SO2 emissions

Volcanic eruptions

300

This type of pollutant, such as arsenic, damage the nervous system

Neurotoxin (heavy metal)

400

This pollutant is commonly emitted by coal-burning powerplants and contributes to acid rain

Sulfur Dioxide (SO2)

400

Furniture and other construction materials can emit this air pollutant into your home over time

Formaldehyde

400

This device uses electrically charged plates to filter out particulates from powerplant emissions

Electrostatic precipitator 

400

This natural weather phenomenon can cause air pollutants to accumulate in the atmosphere because it prevents the process of convection

Thermal Inversion

400

You can develop this condition because of exposure to asbestos

Lung cancer (mesothelioma)

500

This secondary pollutant forms when nitric oxide (NO) combines with VOC's in the atmosphere

PAN's (peroxyacetyl nitrates) 
500

This is the largest source of lead in the atmosphere today (after 1970)

Ore Smelting

500

This compound is used both in scrubbers and during combustion to reduce the amount of SO2 emitted by coal-fired power plants

Calcium carbonate (lime)

500

This gas can form both naturally and anthropogenically and is both a pollutant and a greenhouse gas

Ozone (O3)

500

This type of particulate matter is especially dangerous because it can penetrate deeply into your lungs

PM2.5