Atmospheric Pollution

1. Federal agency responsible for enforcing environmental regulations in the United States
3. A primary air pollutant that is produced by the burning of fossil fuels, such as coal and oil, and can contribute to acid rain, respiratory problems, and other health issues
9. Federal law passed in 1963 that established air quality standards
11. Weather condition where a layer of warm air traps cooler air and pollutants near the ground, leading to poor air quality and health problems
15. Unwanted or excessive sound that can cause harm to human health and well-being, including hearing loss, sleep disturbances, and stress
17. Burning of coal to produce energy, which can release large amounts of pollutants into the air, including SO2, NOx, and particulate matter
18. A mixture of solid and liquid particles that are suspended in the air, and can be inhaled into the lungs causing respiratory and cardiovascular problems
19. secondary air pollutant that is formed by the reaction of NOx and volatile organic compounds in the presence of sunlight, which can contribute to smog and respiratory problems
20. Primary air pollutant that is produced by human activities, such as the burning of fossil fuels, and can cause damage to the nervous system, especially in children
21. Contributes to the greenhouse effect by absorbing and emitting radiation, and can lead to climate change including carbon dioxide, methane, and nitrous oxide

2. Directly emitted into the atmosphere from sources such as vehicles, factories, and power plants
4. Formed by the reaction of sunlight with NOx and VOCs in the atmosphere, and can cause respiratory problems
5. Phenomenon of urban areas being significantly warmer than surrounding rural areas due to human activities, such as the use of dark-colored surfaces and buildings, and the removal of vegetation
6. Naturally occurring radioactive gas that can seep into buildings and pose a health risk when inhaled
7. Found inside buildings, such as homes and offices, and can include VOCs, radon gas, dust, and mold
8. Formed in the atmosphere from the reaction of primary pollutants with other substances in the air
10. Substances that are present in the atmosphere and can have harmful effects on human health, as well as on the environment
12. Primary air pollutants that are produced during high-temperature combustion, such as in vehicle engines, and can contribute to smog, acid rain, and respiratory problems
13. A primary air pollutant that is produced by incomplete combustion of fossil fuels, such as gasoline, and can cause headaches, nausea, and other health problems
14. Formed by the burning of sulfur-containing fuels, such as coal, and can contribute to acid rain
16. Organic chemicals that can vaporize into the air, and can contribute to the formation of smog and other air pollutants