Simple Description

A greenhouse gas produced when most fuels burn - it helps cause global warming.

Further Detail

Any fuel that is burned will release carbon dioxide. Carbon dioxide is a greenhouse gas so releasing it into the atmosphere will increase global warming. Biofuels like wood are often considered "carbon neutral" as, although they release carbon dioxide when burned, they only release the carbon dioxide that they took in while growing.

Related Words:

• Greenhouse effect
• Global warming
• Biomass

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