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NC State Extension

Greenhouse Gas – Defined

Gases that trap heat in the atmosphere are often called greenhouse gases. Some, like carbon dioxide, occur naturally and are emitted through both natural processes and human activities, but other greenhouse gases (e.g., fluorinated gases) are created and emitted solely through human activities. The principal greenhouse gases that enter the atmosphere because of human activities are carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), and fluorinated gases.