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Carbon dioxide is a toxic gas with the formula CO2, showing that each molecule contains 1 atom of carbon and 2 atoms of oxygen.

It often forms from the combustion of carbon or carbon compounds or from acid-base or decomposition reactions involving carbonates.

It is mildly acidic, forming small amounts of carbonic acid (H2CO3) when it reacts with water.

Some scientists are concerned that increasing levels of carbon dioxide in Earth's atmosphere are causing worldwide temperatures to increase.

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14y ago

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