Which compares the effectiveness of methane and nitrous oxide as a greenhouse gas with that of carbon dioxide?(1 point)

Question

Responses

Only methane is a more effective greenhouse gas than carbon dioxide.
Only methane is a more effective greenhouse gas than carbon dioxide.

Only nitrous oxide is a more effective greenhouse gas than carbon dioxide.
Only nitrous oxide is a more effective greenhouse gas than carbon dioxide.

Neither methane nor nitrous oxide is a more effective greenhouse gas than carbon dioxide.
Neither methane nor nitrous oxide is a more effective greenhouse gas than carbon dioxide.

Both methane and nitrous oxide are more effective greenhouse gases than carbon dioxide.
Both methane and nitrous oxide are more effective greenhouse gases than carbon dioxide.

Answer 1

Both methane and nitrous oxide are more effective greenhouse gases than carbon dioxide. Methane is significantly more potent in the short term, with a global warming potential (GWP) over 25 times that of CO2 over a 100-year period, while nitrous oxide has a GWP of about 298 times that of CO2 over the same period. Therefore, the correct response is:

Both methane and nitrous oxide are more effective greenhouse gases than carbon dioxide.