yes, when it is released in large amounts than the normal natural percentage in air
It depends. You mean atmospheric, land or water pollutant? The most important would be carbon dioxide (CO2) from literally, millions of automobiles and industries.
CO2.
Photosynthesis is responsible for lowering the levels of atmospheric CO2 since it is a requirement to make glucose. Cellular respiration produces CO2 as a by-product, so it is responsible for some atmospheric CO2.
Water vapor, CFCs.
Air is primary agent
You will need to use a carbon scrubber device to capture co2 under atmospheric pressure.
Ozone is good at atmospheric level. It is pollutant in ground level.
CO2?
co2
Air is heavier than C02, CO2 has a very low boiling point. It is also a pollutant.
The main pollutant created from the burning of fossil fuels is carbon dioxide (CO2). This greenhouse gas is a major contributor to global climate change and is released when fossil fuels such as coal, oil, and natural gas are burned for energy.
pollution