Air is a mixture of many gases. 99% of clean air is composed of two gases: nitrogen (78%) and oxygen (21%).
It is curious to see that carbon dioxide only takes up less than one percent of the atmosphere. Carbon dioxide absorbs energy emitted by Earth and helps regulate the temperature of the planet.
Contrary to popular belief, CO2 is NOT a pollutant. The depletion of the ozone layer and the production of primary pollutants are the main cause for pollution as well as global warming.
http://topics.nytimes.com/top/reference/timestopics/subjects/w/water_pollution/index.html
Contrary to popular belief, CO2 is NOT a pollutant. The depletion of the ozone layer and the production of primary pollutants are the main cause for pollution as well as global warming.
http://topics.nytimes.com/top/reference/timestopics/subjects/w/water_pollution/index.html