| Some curious minds think about how carbon dioxide | | | | respiration process, and parts of these are absorbed |
| is formed. Carbon dioxide that is present in the | | | | by the plants around for photosynthesis to happen. |
| atmosphere is a chemical compound that is | | | | This gas is also formed as a by-product of the |
| composed of two oxygen atoms that are covalently | | | | combustion process of the fossil fuels in cars. |
| bonded to a carbon atom. Carbon dioxide is a gas if | | | | Volcanism is another source of this gas on earth. |
| at standard temperature and pressure and exists at | | | | From such natural activity, how carbon dioxide is |
| this form in the earth's atmosphere. It is estimated | | | | formed? The emissions that can be traced to |
| that the concentration of the gas is at 387 ppm by | | | | volcanic activity are considered as minor in terms of |
| volume but this amount is about to change due to | | | | global scale. Another event that helped in the |
| human activities. | | | | formation of the gas is the land-use change. For |
| Also the concentration of this gas varies by seasons | | | | example, the widespread deforestation that is |
| due to some factors. So the question about how | | | | happening right now contributes a significant |
| carbon dioxide is formed is just easy to answer. The | | | | percentage of the gas. It has been estimated that |
| concentration of the carbon dioxide will fall during the | | | | these changes in land use has led to the emission of |
| spring since this is the time when plants are in full | | | | at least 1.7 Pg C every year in the tropics. Stationary |
| bloom and these plants absorb the carbon dioxide. | | | | sources of energy can be partly blamed as well for |
| The concentration of the carbon dioxide starts to | | | | the formation of carbon dioxide. The production of |
| shoot up once again during fall and winter as this are | | | | electricity particularly the coal-burning sector |
| the times when most plants go dormant, die and | | | | contributes in the generation of the gas. Other |
| these plants decay. But the concentration of this gas | | | | sources that are stationary include the industrial |
| in the earth's atmosphere is expected to rise in the | | | | sector, the emissions coming from oil extraction, the |
| next few years. Because of human activities, the | | | | refinement and the transportation of oil and also the |
| concentration of this gas has risen in the last 150 | | | | domestic and the commercial fossil fuel use. Aside |
| years. | | | | from stationary sources that can form these gases, |
| How carbon dioxide is formed and multiply? This | | | | mobile sources are great contributors as well. The |
| compound increases and the formation of new | | | | transport-related production of this gas has been |
| carbon dioxide can be traced as well to a number of | | | | growing for quite some time. These mobile sources |
| reasons but it is thru human activities that this gas | | | | include road transport, air and marine transport. |
| has formed to record levels. Based on some facts, | | | | Industries as well those are non-energy related helps |
| around 22 percent of the current atmospheric carbon | | | | in the formation and the creation of this gas. |
| dioxide can be directly traced to the actions of | | | | Examples of industries are the lime and the cement |
| humans. This gas is formed and produced by animals, | | | | factories. And finally biomass burning is a contributor |
| plants, fungi and other organisms during their | | | | as well. |