One Revolution - You may have heard that natural sources, like forest fires and volcanos, produce lots of greenhouse gases — and that's true! But each year, the average GHG emissions from
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Graphic: Major Greenhouse Gas Sources, Lifespans, and Possible Added Heat – Climate Change: Vital Signs of the Planet
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The Principal Greenhouse Gases and Their Sources | The National Environmental Education Foundation (NEEF)
![The Principal Greenhouse Gases and Their Sources | The National Environmental Education Foundation (NEEF) The Principal Greenhouse Gases and Their Sources | The National Environmental Education Foundation (NEEF)](https://www.neefusa.org/sites/default/files/gases-n2o.png)