
A carbon tax is a tax levied on the carbon content of fuels. It is a form of carbon pricing. Carbon is present in every hydrocarbon fuel (coal, petroleum, and natural gas) and is released as carbon dioxide ({chem|CO|2}) when they are burnt. In contrast, non-combustion energy sources—wind, sunlight, hydropower, and nuclear—do not convert hydroc...
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http://en.wikipedia.org/wiki/Carbon_tax

A tax on energy sources which emit
carbon dioxide into the atmosphere. It is an example of a pollution tax, which has been proposed by economists as preferable because it taxes a bad, rather than a good, issue.
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http://www.encyclo.co.uk/local/20453

The carbon tax is a tax added to the sale price of products or services according to the quantity of greenhouse gas, as the carbon dioxide (CO2, carbon dioxide), emitted during their use. Decided in its principle during the said agreements of Grenelle environment, and officially called Contribution climate energy (CCE), it gets potentially fossil f...
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http://www.encyclo.co.uk/local/21732

a tax on energy sources which emit carbon dioxide.
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http://www.translationdirectory.com/glossaries/glossary304.php

A tax levied on fossil fuel usage usually based on the carbon content â€` generally designed to curb use rather than just raise revenue.
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https://www.encyclo.co.uk/local/20639
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