There are many different atmospheric contaminants:
Aerosols these are particles in the atmosphere
Air pollution is the introduction, into the atmosphere, of chemicals, particulate matter, or biological materials that cause harm or discomfort to humans or other living organisms, or damages the natural environment, .
See
http://www.bookrags.com/research/atmospheric-pollution-woes-01/
for an introduction
A substance discharged into the air
Pollutants. This is in my science homework also :)
Pollutants
pollution
Foreign substances in the atmosphere are called air pollutants. These pollutants can come from various sources such as vehicle emissions, industrial processes, and natural sources like wildfires. They can have harmful effects on human health, the environment, and climate.
Harmful substances in the air, water, or soil are called pollutants. These pollutants can include chemicals, toxins, heavy metals, and other harmful substances that can negatively impact human health and the environment.
they are Gaseous
Pollutants
The most gaseous pollutants come from a group called "criteria air pollutants." This group includes substances such as carbon monoxide, sulfur dioxide, nitrogen oxides, ozone, and particulate matter. These pollutants are monitored and regulated due to their significant impact on air quality and human health. They can originate from various sources, including vehicle emissions, industrial processes, and natural events.
Primary pollutants are pollutants that enters the air directly from a source and Secondary pollutants are air pollutantsproduced by the reaction of a primary pollutant with some other pollutant
there are many pollutants. These are greenhouse gases.
The air outside is called atmospheric air or outdoor air. It consists of a mixture of gases including nitrogen, oxygen, carbon dioxide, and others, as well as various pollutants and particulate matter.