Clean Air Act
Smog
Indoor Air Pollution
Pollution Reduction
Misc.
100

Federal agency that sets and enforces rules and standards of the Clean Air Act.

Environmental Protection Agency

100

Provides the activation energy needed for tropospheric ozone formation.

Sunlight

100

This potentially deadly pollutant is a colorless and odorless gas that displaces oxygen carried by red blood cells. 

Carbon monoxide

100

Facilitates reactions within hot automobile engine exhaust to convert NOx, CO, and unburnt hydrocarbons into CO2, N2, O2, and H2O. 

Catalytic Converter

100

Source of Mr. Abdale's most detested seasonal sound.

Leaf blower

200

Pollutant that has been reduced by approximately 98% since the Clean Air Act was adopted. 

Lead

200

Due to environmental factors such as heavy traffic and low albedo surfaces, photochemical smog formation is most common in this type of area.

Urban

200

Along with carbon monoxide, this indoor air pollutant is most common in developing nations.

Particulate matter

200

Electrostatic precipitators and baghouse filters are used to reduced smokestack emissions of this pollutant. 

Particulate matter

200

Aquatic noise pollution is most disruptive to this type of organism.

Whales and/or dolphins

300

Pollutant released by fossil fuel combustion, metal smelting, oil refining. 

Sulfur dioxide

300

Atmospheric phenomenon that can cause smog to linger for prolonged periods of time.

Thermal Inversion

300

Indoor air pollutant previously used in insulation and other building materials; known cause of cancer and lung damage. 

Asbestos

300

Pollution control method that captures VOCs released while refueling an automobile.

Vapor recovery nozzle

300

This pollutant can indirectly harm aquatic life by increasing the solubility of aluminum ions (Al3+) in rocks and soil, leaching them into nearby surface waters.  

Acid precipitation

400

Of the six criteria pollutants under the Clean Air Act, this is the only one that is almost strictly classified as a secondary pollutant. 

Ozone

400

Pollution that promotes photochemical Smog build-up by preventing natural, overnight ozone destruction.

Volatile Organic Compounds (VOCs)

400

This indoor ailment may cause symptoms such as nausea, fatigue, coughing, sneezing, and eye irritation. 

Sick building syndrome

400

Air pollution control method that can reduce NOx formation while burning coal.

Fluidized bed combustion

400

When interacting with atmospheric water, this secondary pollutant (of sulfur dioxide) dissociates to form sulfate ions and the hydrogen ions that lower the pH of precipitation.

Sulfuric acid 

500

In 1980, the federal agency empowered by the Clean Air Act established NAAQS for the six criteria pollutants. What does the acronym, NAAQS, stand for?

National Ambient Air Quality Standards

500

Volatile organic compounds react with nitric oxide to form this component of photochemical smog.

Peroxyacetyl Nitrate (PAN)

500

Second (to smoking) leading cause of lung cancer in the United States. 

Radon-222

500

Air pollution control device that can be used to remove BOTH particulate matter AND gases (such as NOx and SOx) from industrial exhaust streams.

Wet scrubbers

500
When acid precipitation lowers the pH of soil, the additional Hions displace positive nutrient ions (Ca2+, K+, Mg2+) from clay particles. The displacement of these nutrient ions reduces this important soil property.

Cation Exchange Capacity

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