Natural Sources of Air Pollutants
This natural event converts nitrogen gas into NO₂ and NO₃.
Lightning Strikes
PM stands for this type of air pollutant made of tiny particles.
Particulate Matter
What is the decomposition of organic matter releasing oxygen called?
Aerobic Decomposition
These organisms release VOCs into the atmosphere.
Plants
This type of PM is smaller than 10 micrometers.
PM10
What is the decomposition of organic matter releasing methane (CH4) called?
Anaerobic Decomposition
This natural process releases CO₂ from all living organisms.
Respiration
This type of PM is small enough to enter deep into the lungs.
PM2.5
What is the difference between aerobic and anaerobic decomposition?
Aerobic decomposition requires oxygen
This natural event releases CO, PM, and NO₂/NO₃ through combustion.
Forest Fires
This atmospheric effect happens when particles scatter sunlight and reduce visibility.
Haze
Which type of decomposition is faster?
Aerobic
This natural source releases SO₂, PM, CO, and nitrogen oxides.
Volcanoes
Two examples of natural PM include these two things found in the air.
Pollen & Sea Salt
What is haze?
The scattering of sunlight leading to reduced visibility