Small amounts of carbon dioxide are also emitted from volcanoes
and other geothermal processes such as hot springs and geysers and
by the dissolution of carbonates in crustal rocks.
It is a compound of one carbon atom and two oxygen atom.it's name is carbon dioxide. In human oxygen is essential to live life but in plants it is most essential to live life. It it is increase vigorously in air then it is more harmful to human beings.