Air pollution crossword

2. A mix of smoke and fog caused by air pollution.
4. A gas released when burning sulfur-containing fossil fuels.
6. A layer of warm air that prevents polluted air from rising.
7. A pollutant formed when sunlight triggers chemical reactions in air pollutants.
8. Smog caused by burning coal and sulfur-rich fuels in industrial areas.
11. The process of a liquid turning into a gas.
12. Carbon-based compounds from fuel that help form smog in the atmosphere.
14. Smog created by sunlight reacting with vehicle emissions, common in sunny cities.
15. A cloudy condition in the air that reduces visibility.
16. Very fine particles small enough to enter deep into the lungs.
17. Harmful substances in the atmosphere that damage health and the environment.
18. A pollutant released directly from a source like cars or factories.
20. Harmful substances found inside homes, schools, and buildings.

1. A weather condition where warm air traps cooler air and pollution near the ground.
2. A system used in factories to remove harmful gases from emissions.
3. A car device that reduces harmful exhaust emissions.
5. A device that uses electric charges to remove particles from industrial smoke.
9. A toxic metal that can enter the air from industrial processes and fuels.
10. A pollutant formed in the atmosphere through chemical reactions.
13. A device on gas pumps that captures fuel vapors before they escape into the air.
19. Airborne particles smaller than 10 micrometers in diameter.