In this scenario,how would you best describe CO₂?
A)It is a baseline comparison for the GWP values of all other GHGs.
B)It is a GHG whose GWP value is dependent upon the GWP values of all other GHGs.
C)It is the GHG that is the most efficient at trapping heat on Earth.
D)It is the GHG that is the least efficient at trapping heat on Earth.

Question

Quizplus · Accepted Answer

CO₂ is often used as a baseline or reference gas with a GWP value of 1, against which the GWP values of other GHGs are measured. This is because it is the most abundant and persistent GHG in the atmosphere, and it has a relatively long atmospheric lifetime.

In This Scenario,how Would You Best Describe CO₂