has a GWP over 20 times higher than CO₂.However,CH₄ emitted today lasts for only about a decade in the atmosphere,while the GWP of CO₂ can last for thousands of years.What is a possible reason that CH₄ can have such a high GWP as compared to CO₂?
A)The 100-year time frame is too short of a time frame to compare CH₄ and CO₂.
B)CH₄ absorbs more energy than CO₂.
C)CH₄ is less efficient at trapping heat on Earth.
D)CH₄ is not a proven greenhouse gas.

Question

Quizplus · Accepted Answer

The reason that CH₄ can have a higher GWP than CO₂ even though it only lasts for a decade in the atmosphere is because it absorbs more energy than CO₂. This means that even though it doesn't stay in the atmosphere as long as CO₂, it has a more immediate impact on trapping heat and causing warming.

Has a GWP Over 20 Times Higher Than CO₂