Carbon dioxide is a chemical compound composed of one carbon and two oxygen atoms.

It is often referred to by its formula CO2.

It is present in the Earth's atmosphere at a low concentration and acts as a greenhouse gas.

In its solid state, it is called dry ice.

It is a major component of the carbon cycle. Atmospheric carbon dioxide derives from multiple natural sources including volcanic outgassing, the combustion of organic matter, and the respiration processes of living aerobic organisms; man-made sources of carbon dioxide come mainly from the burning of various fossil fuels for power generation and transport use.

It is also produced by various microorganisms from fermentation and cellular respiration.

Plants convert carbon dioxide to oxygen during a process called photosynthesis, using both the carbon and the oxygen to construct carbohydrates.

In addition, plants also release oxygen to the atmosphere, which is subsequently used for respiration by heterotrophic organisms, forming a cycle.

For more information about the topic Carbon dioxide, read the full article at Wikipedia.org, or see the following related articles:

Sulfur dioxide — Sulfur dioxide (also sulphur dioxide, sulfurous anhydride or sulphurous anhydride) has the chemical formula SO2. The gas is irritating to the lungs ...  > read more

Citric acid — Citric acid is a weak organic acid found in citrus fruits. It is a natural preservative and is also used to add an acidic (sour) taste to foods and ...  > read more

Hydrogen chloride — Hydrogen chloride, also known under the name HCl, is a highly corrosive and toxic colorless gas that forms white fumes on contact with ...  > read more

Chloroform — Chloroform, also known as trichloromethane and methyl trichloride, is a chemical compound with formula CHCl3. It does not support combustion in air, ...  > read more

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