The Earth's Atmosphere
In the natural order of life, although the earth's atmosphere remains fairly consistent, the air is continually being produced and used by various forms of life and natural processes.
carbon-info.org
Only a very small part of the earth's atmosphere is carbon dioxide (CO2) - about 0.04%. Yet without CO2, plants, animal life and all human activity would cease to exist.
The pre-industrial CO2 levels was about 280 parts per million around the year 1800.
The amount of CO2 in the air is currently increasing with 0.27% per year
-The earth's atmosphere
