STB-4.D—Identify the sources and potency of the greenhouse gases

Identify the sources and potency of the greenhouse gases.

• Carbon dioxide, which has a global warming potential (GWP) of 1, is used as a reference point for the comparison of different greenhouse gases and their impacts on global climate change. Chlorofluorocarbons (CFCs) have the highest GWP, followed by nitrous oxide, then methane.
• Enduring understanding STB-4: Local and regional human activities can have impacts at the global level.